Product Summary

351W, Hydraulic Roller Tappet Camshaft Type

    Key Specs

    MFG. Part #GK35-600-8
    BrandCOMP Cams
    Camshaft TypeHydraulic Roller Tappet
    Intake Duration (.050" Lift)227
    Exhaust Duration (.050" Lift)241

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    COMP Cams GK35-600-8 Details

    GK35-600-8 - Camshaft Kit, FW 283T HR-107 T THUMPR.

    Ford 351W 8 cyl. 1969-1995. Hydraulic Roller-(Thumpr) High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle. Thumpr Retro-Fit Hydraulic Roller Camshafts. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality.

    • Three unique cam designs for each application that deliver excellent horsepower gains & broad torque curve; perfect choice for muscle cars & street rods
    • Early intake valve opening & long exhaust duration create optimum overlap for powerful, hard-hitting exhaust note
    • Best with aftermarket converters & more rear gear


    1969-86 Mercury 351
    1969-95 Ford 351

    CARB Warning

    For race/ off road use only

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    COMP Cams GK35-600-8 Specifications

    MFG. Part #GK35-600-8
    BrandCOMP Cams
    Camshaft TypeHydraulic Roller Tappet
    Intake Duration (.050" Lift)227
    Exhaust Duration (.050" Lift)241
    Speedway Motors Catalog Part #282-GK356008
    Intake Duration283
    Exhaust Duration303
    RPM Range1900 to 5600
    Lobe Separation107 °
    GTIN Code036584183365
    Grind Number283THR7
    Intake Valve Lift w/ Rocker Arm Ratio0.531"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.515"
    External Ignition Box RequiredNo
    Valve Springs RequiredYes
    Valve Spring IncludedNo
    Lifter TypeHydraulic Roller
    Lifters IncludedYes
    Retainers IncludedNo
    Locks IncludedNo
    Valve Stem Seals IncludedNo
    Timing Chain and Gears IncludedYes
    Assembly Lubricant IncludedYes
    Pushrods Included
    Rocker Arms IncludedNo
    Gaskets IncludedNo
    Sold in QuantityKit