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Hooker Headers Competition Headers 265-400 Chevy Small Block V8

520-2453


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Hooker Headers 2453
$228.95
2 left in stock
Competition Headers
  • 265-400 Chevy Small Block V8
  • 1969-91 Blazer, Suburban, Jimmy, Yukon 2DR 4WD
  • 1963-87 1/2, 3/4, & 1 Ton Truck 4WD
  • 1.625'' x 27'' Primary Tubes
  • 2.5'' x 8'' Collector
  • Black Painted
  • Free Shipping - Ships
    QTY

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    Does Hooker Headers 2453 fit your vehicle?

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    1975-1976  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1979  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET K30 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1971  CHEVROLET BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1968  CHEVROLET K30 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1976  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976-1979  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  GMC K2500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1969  CHEVROLET BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1975  GMC K25

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  CHEVROLET V20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979  GMC K2500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1985-1986  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1982  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  CHEVROLET BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1981  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: DELUXE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC K35

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC K15

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1985  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1987  CHEVROLET V10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  GMC V3500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  CHEVROLET BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1977-1979  CHEVROLET K30

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  GMC K25/K2500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976  GMC K15

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  GMC K15/K1500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  CHEVROLET V30

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1971  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1977-1979  CHEVROLET K30

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1968-1969  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1980  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974  CHEVROLET K10 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985-1986  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET K10 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969  CHEVROLET BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1976  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  CHEVROLET K30

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1981  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1987  CHEVROLET V30

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  CHEVROLET K10 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1968  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.3
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1980  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980-1986  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC K15

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985-1986  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1984  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1987  GMC V2500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1979  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  GMC K2500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1974  GMC K25/K2500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976  GMC K25

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973  GMC K35/K3500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: X
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1980-1986  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1976  GMC K15

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: V
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1979  GMC K3500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969  CHEVROLET K30 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1984  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: F
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1972  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1975  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1983  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980  GMC K2500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  GMC K15/K1500 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1979  CHEVROLET K10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976  GMC K25

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980-1982  GMC K2500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1981  GMC JIMMY

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: STREET COUPE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975  GMC K15

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976  GMC K25

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979  GMC K1500

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1978  CHEVROLET K20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1987  CHEVROLET V20

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC K35

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1987  CHEVROLET V10

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Reducers Available With Oxygen Sensor~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974  CHEVROLET K20 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978  GMC K25

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1978  CHEVROLET K5 BLAZER

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973-1974  CHEVROLET K10 PICKUP

    • Fitment_Note: Black Finish; Tube Size 1.625 in. x 27 in.; Collector Size 2.5 in./Length 8 in.; Port Shape Same As Port;Intended For Race Use Only; Breaking In An Engine w/Ceramic Coated Headers Will Damage Coating~Breaking In An Engine w/Ceramic Coated Headers Will Void All Warranties~Header Wraps Can Cause Header Tube Cracks/Rust From Excessive Heat/Moisture~Hooker Does Not Recommend The Use Of Header Wraps/Will Void The Warranty~Will Not Fit With Angle Plug Or Raised Port Heads
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )
    2453 - Hooker Headers Competition Headers Chevy/GM Truck is rated 4.5 out of 5 by 8.
    Rated 5 out of 5 by from 1971 Blazer K5 Worked perfectly in a 1971 K5, 4WD, floor shift manual. Did not need to modify the clutch linkage but my return spring rubbed a bit on one header tube so I used and throttle return spring and a hose clamp to shorten the spring route.
    Date published: 2019-08-18
    Rated 5 out of 5 by from Great product! I replaced the stock exhaust manifolds on my '83 K5 Blazer. Easy to install, look and sound great. Great fit.
    Date published: 2019-04-28
    Rated 5 out of 5 by from Badass headers Put these long tube hookers on my small block 350 and noticed a decent increase in power. Went from original exhaust to open headers and they sure make a difference. Hoping to get some mufflers soon though
    Date published: 2018-05-06
    Rated 5 out of 5 by from Great product I'm happy with this product. I bought a month ago.
    Date published: 2016-08-25
    Rated 5 out of 5 by from Excellent product This product bolted right up and increased my horse power right away, no trimming or modifying brackets.
    Date published: 2015-02-15
    Rated 4 out of 5 by from Good quality and fit. I bought this for my 1987 K5 Blazer with a six inch lift. It's difficult to find a pair of headers that will clear the shackle hanger. These fit perfectly. The only modification needed was minimal grinding on the driver side motor mount to prevent possible contact.
    Date published: 2016-09-20
    Rated 2 out of 5 by from Not impressed Paint can be better, remove from box (rusty), had to sand and repaint, other than that typical hooker heders.
    Date published: 2017-08-05
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    Will these fit a 1983 Chevy S10 with a 350

    Asked by: Venomx45
    No, depending on whether this is a 2wd or 4wd you will need these headers; 2wd - https://www.jegs.com/i/Hooker-Headers/520/2837/10002/-1
    Answered by: Rusty B
    Date published: 2018-05-23
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    Items You Need

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    Motor Vehicles

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