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COMP Cams 54-461-11 LSR Cathedral Port Hydraulic Roller Camshaft GM LS - 239/247

(Chevrolet Silverado 1500 1999-2013, Suburban 1500 2000-14, Camaro 2010-16, Corvette 2005-13, Silverado 2500 HD 2010-19, Tahoe 2000-14 + 52 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

54-461-11
18 reviews
Sale Price

$482.19

Estimated ship date Friday, November 20

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Product Details

The COMP Cams 54-461-11 is a high-performance hydraulic roller camshaft specifically engineered for GM LS Gen III and Gen IV cathedral port engines. This LSR (LS Race) series camshaft delivers an aggressive performance profile with 239/247 degrees of advertised duration, making it ideal for street/strip applications seeking substantial power gains without sacrificing streetability.

Key Features:

  • Hydraulic roller design eliminates the need for valve lash adjustment and provides quiet, reliable operation
  • 239/247 advertised duration provides strong mid-range to top-end power delivery
  • Cathedral port specific grind optimized for cathedral port cylinder heads (not for rectangular port applications)
  • Compatible with factory hydraulic roller lifters and valve train components
  • Designed for GM LS Gen III and Gen IV engines including 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L applications
  • Requires aftermarket performance valve springs and proper valve train setup for optimal performance
  • Ideal for engines with supporting modifications including headers, intake, and tuning

This camshaft is part of COMP Cams' proven LSR series, delivering race-inspired performance in a hydraulic roller package. The aggressive duration and lift characteristics produce excellent throttle response and strong horsepower gains throughout the RPM range, making it perfect for enthusiasts looking to maximize their LS engine's potential while maintaining street drivability.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2013, Suburban 1500 2000-14, Camaro 2010-16, Corvette 2005-13, Silverado 2500 HD 2010-19, Tahoe 2000-14, Impala 2006-09, Colorado 2009-12, Trailblazer 2006-08, Caprice 2011-16, Monte Carlo 2006-07 + 47 more models

Advertised Exhaust Duration

297

Basic Operating RPM Range

2,400-7,200

Engine Family

GM LS GEN III/IV 3-Bolt 8 Cylinder (1997-2015)

Exhaust Valve Lift

0.624

Intake Valve Lift

0.624

Exhaust Duration at .050 inch Lift

247

Grind Number

289LR HR14

MSE Process Video Link

https://www.youtube.com/watch?v=hTyIQxrPCCI

Camshaft Series

LSR Cathedral Port All Out Power

AMAZON ASIN

B002EE4K0G

Assembly Lubricant Included

No

Lifters Included

No

Valve Springs Required

Yes

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

No

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Camshaft Gear Attachment

3-Bolt

LOBE SEPARATION

114

Lifter Type

Hydraulic Roller

Intake Duration at .050 Inch Lift

239

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Advertised Intake Duration

289

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