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COMP Cams 54-454-11 LSR Rectangular Port Hydraulic Roller Camshaft 227/243

(Chevrolet Silverado 1500 1999-2013, Silverado 1500 HD 2001-06, Suburban 1500 2000-14, Camaro 2010-16, Corvette 2005-13 + 60 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

54-454-11
13 reviews
Sale Price

$404.95

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The COMP Cams 54-454-11 is a high-performance hydraulic roller camshaft designed specifically for GM LS Gen III/IV engines with rectangular port cylinder heads. This LSR (LS Race) series camshaft delivers aggressive performance characteristics with 227/243 duration specifications, making it an excellent choice for street/strip applications seeking substantial power gains while maintaining hydraulic roller reliability.

Key Features:

  • Designed for GM LS Gen III/IV rectangular port engines
  • Hydraulic roller design for reduced maintenance and quiet operation
  • 227/243 duration specification optimized for performance builds
  • LSR series profile engineered for maximum power output
  • Precise lobe profiles for improved throttle response and power curve
  • Compatible with stock hydraulic roller lifters and valve train components
  • Ideal for forced induction or naturally aspirated performance applications

This camshaft is part of COMP Cams' renowned LSR series, which combines race-proven lobe designs with the convenience of hydraulic roller technology. The 227/243 duration profile provides excellent mid-range to top-end power while maintaining street manners. Professional installation and proper valve train setup are recommended to achieve optimal performance and ensure component longevity.

Products specifications

Fits

Chevrolet Silverado 1500 1999-2013, Silverado 1500 HD 2001-06, Suburban 1500 2000-14, Camaro 2010-16, Corvette 2005-13, Silverado 2500 HD 2001-06, 2010-19, Tahoe 2000-14, Impala 2006-09, Colorado 2009-12, Trailblazer 2006-08 + 55 more models

Advertised Exhaust Duration

293

Basic Operating RPM Range

1,900-7,000

Engine Family

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

Intake Valve Lift

0.614

Exhaust Valve Lift

0.624

Grind Number

277LrR HR-13

MSE Process Video Link

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

Camshaft Series

LSR Rectangular Port All Out Power

AMAZON ASIN

B005H89URE

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

113

Lifter Type

Hydraulic Roller

Exhaust Duration at .050 inch Lift

243

Intake Duration at .050 Inch Lift

227

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Usage

Street/Strip

Advertised Intake Duration

277

Wrong ones want to return

No comments

My second order for the same rack for our new fleet pickup truck. I did not know what to expect with the first delivery. I was very satisfied and impressed with the quality for the price paid. The price on my second order within a month or two did increase approximately $12. I still feel this price is within reason. Of course we all like to pay less! The shipping time is adequate for the free delivery. I do recommend this rack. If the others in this line are as well build you will not go wrong with this brand. Thanks from the Glynn County Airport Commission Fleet Department.

Great price

great service

Easy shopping thank you

I was very impressed by Autoplicity's customer service and excellent pricing on brand name products. Also, they provided lightning fast shipping even as the holiday weekend approached.<br>As much as I want to see everyone in this world to "live long and prosper," I was especially pleased to deal with a company that did not export their customer service to another country. <br>I look forward to doing business again with Autoplicity.

I was shopping for a bed cover for my truck and found that autoplicity had the lowest price when I was ready to buy. After I placed the order, I got an email notifying me that my order was shipped and got a tracking number. Seamless transaction so far. Very happy.

I found them doing a search for a clutch kit, they are hands down one of the easiest companys to work with and the prices cant be beat..... I looked everywhere

GREAT PRICES AND COMMUNICATION!!!! HIGHLY RECOMMENDED STAFF AND PRODUCTS!!!!!

Item arrived in two days, item was at the best price available, great service will use again!

Purchase process an amount of time from purchase, an product being shipped is short an sweet!

Autoplicity had the best price on the item on the ski rack I needed! I ordered it on a Friday and it was delivered the following Wednesday.

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