Product Summary

Hydraulic Flat Tappet Camshaft Type, Lifters Included

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    Key Specs

    Camshaft TypeHydraulic Flat Tappet
    Intake Duration (.050" Lift)230
    Exhaust Duration (.050" Lift)236
    RPM Range1800 to 6000
    Lobe Separation110 °
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    Need To Know

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    COMP Cams CL51-224-4 Details

    COMP Cams Xtreme Energy XE274H-10 Cam and Lifter Kit for Pontiac V8.

    Pontiac 265-455 c.i. 8 cyl. 1955-1981. Hydraulic-Hi Performance street, very strong mid-range, headers and 2000 stall. Xtreme Energy Hydraulic Flat Tappet Camshafts. PONTIAC Hydraulic CAM AND LIFTER KIT - Xtreme Energy: High performance street, very strong mid-range, headers and 2200+ stall.

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

    Application

    1955-81 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 CL51-224-4 Specifications

    KEY SPECS
    MFG. Part #CL51-224-4
    BrandCOMP Cams
    Camshaft TypeHydraulic Flat Tappet
    Intake Duration (.050" Lift)230
    Exhaust Duration (.050" Lift)236
    RPM Range1800 to 6000
    Lobe Separation110 °
    Lifter TypeHydraulic Flat Tappet
    GENERAL
    Intake Valve Lift w/ Rocker Arm Ratio0.488"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.491"
    Sold in QuantityKit
    Intake Duration274
    Exhaust Duration286
    GTIN Code036584047315
    Grind NumberP XE274H-10
    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

    Questions & Answers

    Fitment

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