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COMP Cams 54-455-11 LSR Cathedral Port Hydraulic Roller Camshaft 215/223 GM LS Gen III/IV

(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

54-455-11
8 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 54-455-11 LSR (Xtreme Energy) hydraulic roller camshaft is engineered specifically for GM LS Gen III/IV engines with cathedral port cylinder heads. This performance camshaft delivers a proven combination of excellent mid-range torque and strong top-end horsepower, making it ideal for street/strip applications and aggressive street machines.

Camshaft Specifications:

  • Advertised Duration: 275°/281° intake/exhaust
  • Duration at .050": 215°/223° intake/exhaust
  • Valve Lift (with 1.7 ratio rockers): .525"/.525" intake/exhaust
  • LSA (Lobe Separation Angle): 115°
  • Hydraulic roller design for reduced friction and increased durability
  • Designed for cathedral port heads (241, 317, 706, 862, 243, 799 castings)

Performance Characteristics:

  • Recommended RPM range: 1,500-6,000 RPM
  • Produces a noticeable performance idle with good street manners
  • Works with stock torque converter and rear gears, but upgraded converter recommended for optimal performance
  • Requires valve spring upgrade - not compatible with stock springs
  • Compatible with stock fuel injection and emissions equipment

This camshaft is an excellent choice for LS-powered trucks, SUVs, and muscle cars seeking substantial performance gains while maintaining driveability. Professional installation and proper valve spring matching are required for reliable operation.

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

Basic Operating RPM Range

1,300-6,500

Engine Family

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

Intake Valve Lift

0.604

Exhaust Valve Lift

0.61

Grind Number

265Lr HR12

MSE Process Video Link

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

Camshaft Series

LSR Cathedral Port Small Displacement/Max Torque

AMAZON ASIN

B002EE2EOA

Assembly Lubricant Included

No

Lifters Included

No

LOBE SEPARATION

112

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.

Advertised Intake Duration

265

Camshaft Gear Attachment

3-Bolt

Lifter Type

Hydraulic Roller

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Advertised Exhaust Duration

273

Exhaust Duration at .050 inch Lift

223

Intake Duration at .050 Inch Lift

215

Title

LSR Cathedral Port 215/223 Hydraulic Roller Cam for GM LS GEN III/IV

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