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COMP Cams Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Only Lift .449"/.456" Duration 256°/268° RPM Range 1200-5200

COMP Cams 12-256-4

249-12-256-4

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Estimated to ship directly from the manufacturer on 08/20/18
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COMP Cams Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Only Lift .449"/.456" Duration 256°/268° RPM Range 1200-5200 $139.99
Xtreme Energy 256H Hydraulic Flat Tappet Camshaft Only
Lift .449"/.456"
Duration 256°/268°
RPM Range 1200-5200

COMP Cams 12-256-4 Details

Chevy 262-400ci Small Block 1987-98

  • Computer Controller

  • 1987-98 Computer Controlled
  • Best in 305 or 350 Tuned Port Injected engines

  • Specifications:

    Intake Valve Lift (in.)
    0.449
    Exhaust Valve Lift (in.)
    0.456
    RPM Range
    1200-5200
    Int. Duration @ .050 in. (Deg)
    212
    Exh. Duration @ .050 in. (Deg)
    218
    Int. Duration Advertised (Deg)
    256
    Exh. Duration Advertised (Deg)
    268
    Engine Make/Size
    Chevy Small Block (262-400)
    Lifter Type
    Hydraulic Flat Tappet
    Usage
    Street/Performance
    Lobe Separation (Deg)
    112
    Advertised Duration
    256 int./268 exh.
    Advertised Exhaust Duration
    268
    Advertised Intake Duration
    256
    Basic Operating RPM Range
    1,200-5,200
    Cam Style
    Hydraulic flat tappet
    Computer-Controlled Compatible
    Yes
    Duration at 050 inch Lift
    212 int./218 exh.
    Exhaust Duration at 050 inch Lift
    218
    Exhaust Valve Lift with Factory Rocker Arm Ratio (
    0.456
    Grind Number
    CS XE256H-12
    Intake Duration at 050 inch Lift
    212
    Intake Valve Lift with Factory Rocker Arm Ratio (i
    0.449
    Quantity
    Sold individually
    Valve Lift with Factory Rocker Arm Ratio
    0.449 int./0.456 exh.
    Valve Springs Required
    Yes
    Manufacturer's Part Number:
    12-256-4

    The Leading Edge of Valve Train Technology

    Comp Cams Xtreme Energy series are perfect for any street or street/strip application where both throttle response and top-end horsepower is desired. These camshafts are designed to take advantage of the latest and greatest in valvetrain technology . Their aggressive lobe design produces better throttle response and top end horsepower than other cams with the same duration @ .050'' lift, while delivering increased engine vacuum. We do not recommend the use of stock valve springs with these camshafts due to the aggressive lobe designs.

    Features:
  • Quicker opening lobe profiles deliver increased responsiveness & more area under the lift curve
  • More vacuum allows an increase in duration for improved performance and assists power brakes
  • Excellent performance in street carbureted applications
  • Best performance with aftermarket intake manifolds, headers, lower gear ratios

    Camshaft & Lifter Kits are indicated by a CL in their part number and include Camshaft, Lifters, Assembly Lube, Decals, and Instructions.

    Complete Kits are indicated by a K in their part number and include Camshaft, Lifters, Timing Chain & Gears, Valve Springs, Retainers, Locks, Assembly Lube, Decals, and Instructions.

    Small Kits are indicated by a SK in their part number and include Camshaft, Lifters, Timing Chain Set, Assembly Lube, Decals, and Instructions.

  • Does COMP Cams 12-256-4 fit your vehicle?

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    Aspiration

    1974 GMC C25/C2500 PICKUP

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973 CHEVROLET EL CAMINO

    • CC: 6555
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: CUSTOM
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1988-1990 CHEVROLET BLAZER

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SCOTTSDALE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC C25 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1965-1967 CHEVROLET CHEVY II

    • CC: 5358
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1968 CHEVROLET C20 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1968-1969 GMC G25/G2500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: RALLY
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1985 CHEVROLET G30 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: HI-CUBE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1985 CHEVROLET CAPRICE

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 GMC C1500 PICKUP

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979 GMC C3500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: HIGH SIERRA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972 CHEVROLET CHEVELLE

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: MALIBU
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1971 CHEVROLET C10 PICKUP

    • CC: 5736
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978 OLDSMOBILE CUTLASS SALON

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • EngineType: ALL
    • SubModel: 442

    1978-1980 GMC C1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1977-1979 CHEVROLET CORVETTE

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • EngineType: ALL
    • SubModel: ALL

    1973-1974 CHEVROLET LAGUNA

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1969-1973 GMC C25/C2500 PICKUP

    • CC: 5736
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 CHEVROLET MALIBU

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 CHEVROLET CHEVELLE

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: MALIBU
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 CHEVROLET K5 BLAZER

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1980 GMC C1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: HIGH SIERRA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1979-1980 GMC K2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1976 GMC SPRINT

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SIERRA MADRE DEL SUR
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979 GMC G15/G1500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: RALLY
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1985 CHEVROLET K20 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1979 CHEVROLET NOVA

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: RALLY
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980-1981 CHEVROLET CORVETTE

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1990-1995 CHEVROLET K1500 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: WT
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1982-1986 GMC C1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: HIGH SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 CHEVROLET MALIBU

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968-1969 GMC G15/G1500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: RALLY
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1968-1969 CHEVROLET G20 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SPORTVAN
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1988 CHEVROLET R30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: CUSTOM DELUXE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 CHEVROLET K10 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1969 CHEVROLET K10 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1969 CHEVROLET C10 PICKUP

    • CC: 5358
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1975-1986 GMC G25/G2500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: RALLY STX
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1968 GMC C35/C3500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.4
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.4 L / 327 )

    1975-1986 GMC K1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: HIGH SIERRA
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1981-1982 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 CHEVROLET CAMARO

    • CC: 5736
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1979 CHEVROLET NOVA

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: RALLY
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1985-1986 CHEVROLET K10 SUBURBAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SILVERADO
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1974 CHEVROLET C10 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1985-1986 GMC C3500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SIERRA CLASSIC
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET C20 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1994-1995 CHEVROLET K3500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1973 CHEVROLET CHEVELLE

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: DELUXE
    • Engine Vin: T
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978 CHEVROLET K5 BLAZER

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 CHEVROLET EL CAMINO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: CONQUISTA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976 GMC C1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: SIERRA CLASSIC
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1989-1991 CHEVROLET R3500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1980 PONTIAC GRAND LEMANS

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SAFARI
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1978 BUICK LESABRE

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1980 CHEVROLET K10 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET C10 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BIG TEN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1979-1980 CHEVROLET MALIBU

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: ESTATE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976-1980 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: RALLY
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 CHEVROLET CAPRICE

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1984 CHEVROLET CAMARO

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: Z28
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1975-1978 CHEVROLET G30 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: SPORTVAN
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1981-1986 CHEVROLET K10 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1967 GMC C25/C2500 PICKUP

    • CC: 4638
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 4.6
    • SubModel: BASE
    • CUI: 283
    • EngineType: V8 ( 4.6 L / 283 )

    1975-1979 CHEVROLET G30 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: HI-CUBE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1974 CHEVROLET NOVA

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1966 CHEVROLET CHEVELLE

    • CC: 5358
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.3
    • SubModel: BASE
    • CUI: 327
    • EngineType: V8 ( 5.3 L / 327 )

    1980 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: BASE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1969-1970 CHEVROLET IMPALA

    • CC: 5736
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 GMC K1500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: SIERRA GRANDE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1988-1995 CHEVROLET C1500 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: CHEYENNE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1981-1988 CHEVROLET MONTE CARLO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976-1987 CHEVROLET EL CAMINO

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976-1979 CHEVROLET C30 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: CHEYENNE
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1975-1977 GMC C15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1979-1980 GMC K2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 6.6
    • SubModel: HIGH SIERRA
    • CUI: 400
    • EngineType: V8 ( 6.6 L / 400 )

    1972-1974 CHEVROLET MONTE CARLO

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: J
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1975-1978 GMC K15 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1974 GMC K1500 PICKUP

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1973-1974 CHEVROLET K20 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: BASE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972-1973 CHEVROLET C30 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1985-1986 CHEVROLET K20 SUBURBAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1979 CHEVROLET C10 PICKUP

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SCOTTSDALE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976 CHEVROLET MONZA

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1977-1979 GMC K1500 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SIERRA GRANDE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1969-1973 CHEVROLET NOVA

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1969-1973 CHEVROLET G10 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1968-1969 CHEVROLET G20 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1983-1984 PONTIAC FIREBIRD

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1968 GMC K25/K2500 SUBURBAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: BASE
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1980 GMC C2500 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SIERRA GRANDE
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1972 CHEVROLET BISCAYNE

    • CC: 5737
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: L
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1977-1978 GMC C25 SUBURBAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: SIERRA CLASSIC
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1976-1978 GMC G35/G3500 VAN

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: RALLY CAMPER SPECIAL
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1978-1979 CHEVROLET G30 VAN

    • CC: 5031
    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: CHEVY VAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1985-1986 CHEVROLET K20 PICKUP

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.7
    • SubModel: SILVERADO
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1980 CHEVROLET BLAZER K5

    • Fitment_Note: Not Legal For Sale Or Use On Pollution-Controlled Motor Vehicle
    • Liter: 5.0
    • SubModel: CUSTOM DELUXE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    are the stock injectors big enough

    Asked by: cewert
    Yes if 1987-98 Computer Controlled Best in 305 or 350 Tuned Port Injected engines
    Answered by: SteveM
    Date published: 2018-03-24
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations