Product Summary

Hydraulic Roller Tappet Camshaft Type

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    Key Specs

    Camshaft TypeHydraulic Roller Tappet
    RPM Range1600-5400
    Intake Duration (.050" Lift)218
    Exhaust Duration (.050" Lift)224
    Lobe Separation110 °
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    Need To Know

    Quick and Easy Returns

    Return Policy

    COMP Cams 08-422-8 Details

    COMP Cams Xtreme Energy XR 270HR-10 Camshaft for Small Block Chevrolet Carbureted Engines Originally Equipped with Hydraulic Roller Cams.

    Xtreme Energy. High performance applications, Largest w/ stock converter, Noticeable idle. Hydraulic Roller - Xtreme Energy: High performance application, largest cam with stock converter, noticeable idle.

    • 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

    1987-98 Chevy 305-350

    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 08-422-8 Specifications

    KEY SPECS
    MFG. Part #08-422-8
    BrandCOMP Cams
    Camshaft TypeHydraulic Roller Tappet
    RPM Range1600-5400
    Intake Duration (.050" Lift)218
    Exhaust Duration (.050" Lift)224
    Lobe Separation110 °
    GENERAL
    Intake Valve Lift w/ Rocker Arm Ratio0.495"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.502"
    Intake Duration270
    Exhaust Duration276
    Sold in QuantityEach
    Grind NumberCS XR270HR-10
    GTIN Code036584025023
    External Ignition Box RequiredNo
    Valve Springs RequiredYes

    Questions & Answers

    3 Questions • 3 Answers

    Does this come with lifters or what is needed for this application?

    by Zack

    • 4 months ago

    1 answer

    What would the lift be with 1.6 rocker arms?

    by William

    • 2 years ago

    1 answer

    What timing chain should I run with this cam?

    by Bobby

    • 3 years ago

    1 answer

    3 of 3 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

    • 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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