Product Summary

Hydraulic Roller Tappet Camshaft Type

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    Key Specs

    Camshaft TypeHydraulic Roller Tappet
    RPM Range1700-6800
    Intake Duration (.050" Lift)223
    Exhaust Duration (.050" Lift)231
    Lobe Separation112 °
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    Need To Know

    Quick and Easy Returns

    Return Policy

    COMP Cams 54-457-11 Details

    COMP Cams LSR Cathedral Port 273LrHR-12 Camshaft for LS Gen III/IV, Three-Bolt.

    LSR Cathedral Port (Small Displacement or Max Torque, 4.8L-5.3L). Hydraulic Roller-Steady power throughout broad range. Needs aftermarket airflow improvements on inlet and exhuast. All COMP Cams Camshafts are manufactured to the strictest tolerances. Rigorously tested and checked for quality.

    • Take advantage of today’s newer & better flowing aftermarket cylinder heads
    • Feature higher exhaust duration & overall lift to provide broadest powerband and most top-end power of any COMP Cams LS Camshaft
    • Unique grinds for both cathedral & rectangle port heads
    • Require 26926-16 high-load valve springs

    Application

    1997-15 Chevy 294c.i. to 427c.i.

    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 54-457-11 Specifications

    KEY SPECS
    MFG. Part #54-457-11
    BrandCOMP Cams
    Camshaft TypeHydraulic Roller Tappet
    RPM Range1700-6800
    Intake Duration (.050" Lift)223
    Exhaust Duration (.050" Lift)231
    Lobe Separation112 °
    GENERAL
    Intake Valve Lift w/ Rocker Arm Ratio0.610"
    Exhaust Valve Lift w/ Rocker Arm Ratio0.617"
    Intake Duration273
    Exhaust Duration281
    Sold in QuantityEach
    Grind Number273LRHR12
    GTIN Code036584195214
    External Ignition Box RequiredYes
    Valve Springs RequiredYes

    Questions & Answers

    Fitment

    • GM LM4

    • GM LSA

    • GM LM7

    • GM LQ9

    • 6.2 Chevy LS V8

    • GM LM7

    • GM LQ9

    • 6.2 Chevy LS V8

    • GM LM7

    • GM LQ9

    • 6.2 Chevy LS V8

    • GM LM7

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ9

    • GM LQ4

    • GM LM7

    • GM LQ4

    • GM LQ9

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LM4

    • GM LM7

    • GM L59

    • GM LM7

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM L59

    • GM LM7

    • 4.8 Chevy LS V8

    • 6.2 Chevy LS V8

    • GM LM4

    • GM LM4

    • GM LM4

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM L33

    • GM LM7

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM L33

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM L33

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM L33

    • GM LQ4

    • GM L33

    • GM L59

    • GM LM7

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LM7

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • 4.8 Chevy LS V8

    • GM LM7

    • GM LM7

    • GM L59

    • GM LM7

    • GM LQ4

    • GM LQ4

    • GM LQ4

    • 6.2 Chevy LS V8

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