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Product Summary

Hydraulic Flat Tappet Camshaft Type, Lifters Included

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    Key Specs

    Camshaft TypeHydraulic Flat Tappet
    Intake Duration (.050" Lift)253
    Exhaust Duration (.050" Lift)253
    RPM Range3000 to 6500
    Lobe Separation110 °
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    Need To Know

    Quick and Easy Returns

    Return Policy

    COMP Cams CL51-241-4 Details

    CL51-241-4 - Cam and Lifter Kit, P8 305H.

    Pontiac 265-455 c.i. 8 cyl. 1955-1981. Hydraulic-Racy idle. Bracket Racing cam. Needs 10.5:1 compression and 3500 stall. Low gear ratio. Magnum Hydraulic Flat Tappet Camshafts. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality.

    • Great high RPM power
    • Easy on valve train parts
    • Can be used with mild ratio rocker arms & traditional performance valve springs
    • Best with aftermarket converter & 9.5:1+ compression

    Application

    1956-81 Pontiac 265-455

    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 CL51-241-4 Specifications

    KEY SPECS
    MFG. Part #CL51-241-4
    BrandCOMP Cams
    Camshaft TypeHydraulic Flat Tappet
    Intake Duration (.050" Lift)253
    Exhaust Duration (.050" Lift)253
    RPM Range3000 to 6500
    Lobe Separation110 °
    Lifter TypeHydraulic Flat Tappet
    GENERAL
    Intake Valve Lift w/ Rocker Arm Ratio0.525"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.525"
    Sold in QuantityKit
    Intake Duration305
    Exhaust Duration305
    GTIN Code036584451341
    Grind Number305H
    External Ignition Box RequiredNo
    Valve Springs RequiredYes
    Valve Spring IncludedNo
    Lifters IncludedYes
    Retainers IncludedNo
    Locks IncludedNo
    Valve Stem Seals IncludedNo
    Timing Chain and Gears IncludedNo
    Assembly Lubricant IncludedYes
    Pushrods IncludedNo
    Rocker Arms IncludedNo
    Gaskets IncludedNo

    Fitment

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