LS 5.3L 4.8L HP Install Rebuild Kit w/ COMP 54-474-11 LSR Rectangular Port 251/267 Cam Camshaft & GM 12499225 Lifters | LIFT: .624″/.624″ | Chevy 4.8L 5.3L LS LR4 LM7 LM4 L33 | MADE IN USA
$999.00
Brand: REDLINE ENGINE SUPPLY
Condition: New
– This is a premium kit that is MADE IN THE USA. Every component in this kit is proudly manufactured in the USA, ensuring the highest quality and reliability on the market. Unlike cheaper import kits that risk premature failure, this kit delivers lasting performance while supporting American manufacturing and helping bring jobs back to the USA.
– THIS LISTING WILL INCLUDE:
– (1) COMP 54-474-11 LSR RECTANGULAR PORT 251/267 CAMSHAFT – 2,600-7,000 RPM Operating Range . 251/267 Duration at .050″. 115 Degree Lobe Separation. 0.624″/0.624″ Valve Lift.
– 16) GENUINE GM PERFORMANCE 12499225 HYDRAULIC ROLLER LIFTERS FOR RELIABILITY. OEM-grade lifters engineered to work seamlessly with the cam, maintain correct preload, ensure quiet operation, and hold up under higher lift and performance demands.
– 2) SETS OF PREMIUM FEL-PRO OR ELGIN HEAD BOLTS – (20) 11MM X 2.0MM X 100MM – (10) 8MM X 1.25MM X 44MM
- 2 years warranty
- Delivery time: 1-2 business days
- Free 90 days return
Description
Description
The Competition Cams 54-474-11 is more than just a camshaft—it’s the backbone of a high-performance LS build. Engineered for large-displacement LS engines with modern rectangle-ported heads and high compression, this cam brings serious specs to the table:
With .624″ lift on both intake and exhaust, you’re allowing significantly more airflow than stock. The duration numbers (251° intake / 267° exhaust @ .050″, 301°/317° advertised) give this cam an extended, aggressive profile that keeps the engine pulling hard through a wide RPM range (2,600–7,000 RPM) for real dynamic performance.
JEGS
+1
The 115° lobe separation angle is tuned for a crisp throttle response, strong mid-range punch and top-end power that build-up heads, block and induction systems can support.
This cam is ideal for serious LS engine builders: whether you’re doing a full blown performance truck build, a street/strip LS swap, or a high-compression naturally aspirated monster, you’ll benefit from the dramatic improvement in airflow, sound, feel and horsepower potential.
Still, performance cams demand correct supporting hardware—stronger springs, proper valve train, and a tune to match. But for builders ready to commit, the 54-474-11 cam sets the foundation for a major power upgrade.
Choose this cam if you want:
A true high-lift, high-duration cam designed for large-displacement LS engines
Stronger throttle feel, aggressive idle character and real torque/power gain
A quality performance-brand cam from a proven manufacturer
A platform you can build around—from naturally aspirated to boosted LS setups
Elevate your LS build. Install specs that matter. Feel the difference.
Manufacturer: COMP CAM REDLINE USA
Model: COMP CAM INSTALL REBUILD KIT
Included components: Guaranteed to fit and meet the specifications of the OE parts being replaced
Warranty: LIFETIME – IF INSTALLED BY A CERTIFIED MACHINIST
Additional information
Additional information
| Brand | REDLINE ENGINE SUPPLY |
|---|---|
| Condition | New |
| Manufacturer | COMP CAM \ REDLINE USA |
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