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Richmond Gear GM 12 Bolt Ring & Pinion Gear Set Ratio: 4.56

836-69-0352-1


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GM 12 Bolt Ring & Pinion Gear Set
  • Ratio: 4.56
  • Teeth: 41-9
  • Series: 3
  • Free Shipping - Ships
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    1979-1980  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1980  CHEVROLET K10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1971  CHEVROLET G20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: C
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1971  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: C
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1970-1972  GMC K15/K1500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1982  GMC K1500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1980  CHEVROLET C20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: X
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1973-1974  GMC C15/C1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1982  GMC C1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: STREET COUPE
    • Engine Vin: J
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1982  GMC K1500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1971-1972  CHEVROLET G20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: S
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1972  GMC G25/G2500 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VANDURA
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1976  GMC G25

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VANDURA
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1971  CHEVROLET K20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: P
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1981  CHEVROLET K5 BLAZER

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1978-1980  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980  CHEVROLET C10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975-1977  CHEVROLET C20 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1973-1974  GMC C25/C2500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1970-1971  CHEVROLET G20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: N
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1970-1971  GMC C15/C1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: S
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1982  GMC K1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1971-1972  CHEVROLET P20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  GMC C25/C2500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1972  GMC K15/K1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1980  GMC K1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1970  CHEVROLET C10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1980  CHEVROLET C10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1978  GMC G15

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VANDURA
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976  GMC K15 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972  CHEVROLET G20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SPORTVAN
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1978-1981  CHEVROLET G20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: NOMAD
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1978-1980  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1980  CHEVROLET C20 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975-1978  GMC C15

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1975  GMC C25

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: N
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972  CHEVROLET G20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970-1971  GMC K15/K1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: N
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975  GMC G15

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: RALLY
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1982  GMC K1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1967  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1976-1980  CHEVROLET C10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1979-1980  GMC G2500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VANDURA
    • Engine Vin: R
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1967-1969  GMC K15/K1500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 305
    • EngineType: V6 ( 5 L / 305 )

    1980-1981  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1971-1972  GMC C15/C1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972  GMC JIMMY

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1976-1980  CHEVROLET C20 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1976-1981  CHEVROLET K10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC K1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1973-1974  GMC P25/P2500 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1975  CHEVROLET G10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEVY VAN
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1970  CHEVROLET C20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: A
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1980  CHEVROLET K10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1982  CHEVROLET C10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1976-1978  GMC K15

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1972  CHEVROLET K20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: H
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CHEYENNE
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1982  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: M
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  CHEVROLET C20 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1977-1978  GMC K15 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1980  CHEVROLET C20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: G
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1981  GMC JIMMY

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: H
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1975  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974  CHEVROLET K20 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974  CHEVROLET K20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  GMC G25

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: RALLY STX
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972  CHEVROLET K20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979  GMC P1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: VALUE VAN
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  CHEVROLET C10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1971  CHEVROLET C20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: C
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1979-1981  GMC G2500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: RALLY STX
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1982  GMC K1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.2
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA GRANDE
    • Engine Vin: C
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1967  CHEVROLET K10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: -
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1976-1980  CHEVROLET C10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980  GMC K1500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: D
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1970  CHEVROLET K10 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: B
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1975  CHEVROLET C20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: CUSTOM DELUXE
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1968  CHEVROLET G20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1980-1981  CHEVROLET K5 BLAZER

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1980  CHEVROLET P10

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1970-1971  GMC C15/C1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: N
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1973-1974  CHEVROLET P20 VAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.1
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Q
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1977-1979  CHEVROLET C20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1969  CHEVROLET C20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 396
    • EngineType: V8 ( 6.5 L / 396 )

    1973-1974  CHEVROLET C20 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: W
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975  GMC C25 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: Z
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1975  CHEVROLET K20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SCOTTSDALE
    • Engine Vin: M
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1980-1981  GMC C2500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: HIGH SIERRA
    • Engine Vin: W
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1969-1970  GMC C25/C2500 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: E
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1976-1980  CHEVROLET C20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 7.4
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SILVERADO
    • Engine Vin: S
    • CUI: 454
    • EngineType: V8 ( 7.4 L / 454 )

    1972  CHEVROLET C10 SUBURBAN

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: F
    • CUI: 307
    • EngineType: V8 ( 5 L / 307 )

    1975-1981  CHEVROLET P20

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 4.8
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: STEP-VAN
    • Engine Vin: T
    • CUI: 292
    • EngineType: L6 ( 4.8 L / 292 )

    1972  GMC C15/C1500 PICKUP

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 6.6
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: U
    • CUI: 402
    • EngineType: V8 ( 6.6 L / 402 )

    1979  GMC K1500

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: SIERRA CLASSIC
    • Engine Vin: U
    • CUI: 305
    • EngineType: V8 ( 5 L / 305 )

    1973-1975  GMC JIMMY

    • Fitment_Note: For GM 8.875" (12 Bolt); 4.56 Ratio; Thick Gear; 3.40 Ratio Carrier and Lower
    • Liter: 5.7
    • Aspiration: NATURALLY ASPIRATED
    • SubModel: BASE
    • Engine Vin: Y
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    Items You Need

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.

    Tools:

    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.