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COMP Cams 54-478-11 LSR Centrifugal Blower Hydraulic Roller Camshaft for 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

54-478-11
15 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 54-478-11 LSR (Late Model Street Rod) hydraulic roller camshaft is specifically engineered for GM LS Gen III/IV engines equipped with centrifugal superchargers. This performance camshaft delivers an optimized power curve that works in harmony with boost applications, providing excellent low-end torque while maximizing mid-range and top-end horsepower.

Camshaft Specifications:

  • Duration at 0.050": 235°/251° (intake/exhaust)
  • Hydraulic roller design for reduced friction and improved durability
  • Engineered specifically for centrifugal blower applications
  • Compatible with GM LS Gen III and Gen IV engines
  • Optimized lobe profiles for forced induction performance

This camshaft profile is designed to build boost efficiently while maintaining strong cylinder pressure throughout the RPM range. The hydraulic roller lifters provide quiet operation and reduced valvetrain wear compared to flat tappet designs, making this an excellent choice for street-driven supercharged LS builds that demand both performance and reliability.

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

301

Basic Operating RPM Range

2,500-7,200

Engine Family

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

Intake Valve Lift

0.621

Exhaust Valve Lift

0.624

Exhaust Duration at .050 inch Lift

251

Grind Number

285LCB HR15

MSE Process Video Link

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

Camshaft Series

LSR Centrifugal Blower

AMAZON ASIN

B002EDX3OQ

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

115

Lifter Type

Hydraulic Roller

Intake Duration at .050 Inch Lift

235

Cam Type

Hydraulic Roller

Camshaft Material

Billet Steel

Advertised Intake Duration

285

I recieved my order faster than expected, and had it installed in about an hour and a half. The fit was excellent and I am very happy, I also got the crossover but haven't had time to install it. My old 95 sounds great and I have better acceleration, thank you for a well made, bolt on system.

My experience with this site has always been fantastic my only issue is with the product I recently purchased which has nothing to do with auto place city itself has to do with the doorman the part doesn't fit correctly

Got exactly what I ordered, fit 21 ft Triton very well, , arrival date kept changing do to weather

Great customer service however the merchandise I ordered was damaged which was a great inconvenience ☹️.

Part was correct and arrived on time

easy ordering!

weary easy

They had the lowest price and great communication. Will order from them again thanks

Fast and easy

Incredible prices! I purchased a name brand leveling kit for 40% less than any one else is selling them for. Item shipped out within 2 days. Shipping cost is reasonable, and if you leave a review here after your purchase, they'll credit you back $5! BEST DEAL GOING!

easy enough so far

I looked around for the best peice for a set of Sparco seats. I found them on autoplicity much cheaper then anywhere else. I figured it would take a few days to ship, but by the time i decided to call for a tracking #, I got an email with tracking # and that my seat was all ready to be delivered the next day. They didnt ship together because they were out of stock for a day or 2. I called about my other seat a few days later and it was already delivered at my door. Any future purchases will be checked with autoplicity 1st.

Great site. Provided needed technical specs. Shipped promptly. Although I had to ask for the tacking number, it was not emailed, one was provided promptly upon request.

Unbeleiveable!!!! Super fast shipping!! Great job!!! Keep up the good work!<br><br>P Savaria

best price, cheap shipping, easy to order, thank you Order Number: 4829<br>

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