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COMP Cams 54-477-11 LSR Centrifugal Blower Hydraulic Roller Camshaft 227/243 GM LS

(Chevrolet Silverado 1500 1999-2013, Suburban 1500 2000-14, Camaro 2010-16, Corvette 2005-13, Silverado 2500 HD 2010-19, Tahoe 2000-14 + 55 more models)

Manufacturer

Picture for manufacturer COMP Cams

Part Number

54-477-11
5 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 54-477-11 is a hydraulic roller camshaft specifically designed for GM LS Gen III/IV engines equipped with centrifugal superchargers. This LSR (Late-Intake-Valve-Closing) series cam features 227/243 duration specifications optimized to maximize boost efficiency and power delivery in forced induction applications.

Key Features:

  • Hydraulic roller design for quiet operation and low maintenance
  • LSR profile with late intake valve closing optimized for centrifugal blower applications
  • 227/243 duration delivers excellent mid-range to top-end power with forced induction
  • Engineered specifically for GM LS Gen III/IV engines (4.8L, 5.3L, 5.7L, 6.0L, 6.2L)
  • Compatible with stock hydraulic roller lifters and valve train components
  • Smooth idle quality while supporting significant boost levels

This camshaft is ideal for street/strip and high-performance street applications running centrifugal superchargers like Vortech, Paxton, or ProCharger systems. The LSR grind profile helps prevent boost loss from premature intake valve closing, ensuring maximum cylinder filling and power output under boost.

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 2011-17, Monte Carlo 2006-07 + 50 more models

Advertised Exhaust Duration

293

Basic Operating RPM Range

2,200-7,000

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

277LCB HR14

MSE Process Video Link

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

Camshaft Series

LSR Centrifugal Blower

AMAZON ASIN

B001P24POE

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

Exhaust Duration at .050 inch Lift

243

Intake Duration at .050 Inch Lift

227

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Advertised Intake Duration

277

The shipping cost was great.

found what I needed at a great price

Quick and easy pay options!

I ordered online with autoplicity via google checkout. It was easy and a real good price compared to other sites. The communication was great every step of the way. Order confirmation, order tracking number and shipping number. Super fast shipping for a heavy item (springs)and was in perfect condition. I Will shop with them again.

Ordered a Thule Bike Rack from Autoplicity and was greatly pleased with the price. It was the best on the internet. There was an issue with the shipment of the item and some confusion but this was resolved in a professional manner by a customer service manager. Overall, I'm pleased I got a deal.

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