Product Summary

Hydraulic Roller Tappet Camshaft Type

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    Key Specs

    Camshaft TypeHydraulic Roller Tappet
    RPM Range2500-6200
    Intake Duration (.050" Lift)243
    Exhaust Duration (.050" Lift)257
    Lobe Separation107 °
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    COMP Cams 12-602-8 Details

    COMP Cams Big Mutha' Thumpr 299THR-7 Hydraulic Roller Camshaft for Small Block Chevy.

    Chevrolet 262-400 c.i. 8 cyl. 1958-1998. Street/strip, Needs 9.5:1 compression, 2800+ stall, intake, gears & headers, Very rough idle. 3 grinds to fit all of your performance needs. Unique design. Maximizes sound and mid to high RPM power. Ensures safe piston-to-valve clearance. Proven to generate 25+ RWHP gains. Does not compromise durability.

    • 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

    Application

    1958-98 Chevy 262-400

    Guides & Documents

    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 12-602-8 Specifications

    KEY SPECS
    MFG. Part #12-602-8
    BrandCOMP Cams
    Camshaft TypeHydraulic Roller Tappet
    RPM Range2500-6200
    Intake Duration (.050" Lift)243
    Exhaust Duration (.050" Lift)257
    Lobe Separation107 °
    GENERAL
    Intake Valve Lift w/ Rocker Arm Ratio0.533"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.519"
    Intake Duration299
    Exhaust Duration319
    Sold in QuantityEach
    Grind Number299THR7
    GTIN Code036584148401
    External Ignition Box RequiredNo
    Valve Springs RequiredYes

    Questions & Answers

    1 Question • 1 Answer

    What valve springs and push rods do I need for this cam. Thanks

    by Ed

    • 7 years ago

    1 answer

    1 of 1 questions shown

    Fitment

    • Gen 1 L03 Small Block Chevy

    • 1-Piece Rear Main 305 LB9

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • 1-Piece Rear Main 305 LG4

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 DZ Small Block Chevy

    • 2-Piece Rear Main 305 LB9

    • 1-Piece Rear Main 305 LB9

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Gen 1 L03 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • Vortec L31 Small Block Chevy

    • 2-Piece Rear Main 305 LB9

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