COMP CAM 54-601-11 Mutha Thumpr 227/241 Camshaft Install Rebuild Kit w/ GM 12499225 Lifters | LIFT: .563″/.546″ | FITS: Chevy 5.3L 4.8L LS LR4 LM7 L33 LMG LC9 LY5 | Rough Idle | 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.
– • Legendary Mutha’ Thumpr Sound & Choppy Idle Note — The tight 109° LSA creates heavy valve overlap, producing the iconic Mutha’ Thumpr lope. This deep, rowdy, aggressive idle gives your LS that unmistakable hot-rod attitude that turns heads anywhere it runs.
– (1) COMP CAM 54-601-11 MUTHA’ THUMPR 227/241 CAMSHAFT – 2,300-6,600 RPM Operating Range . 227/241 Duration at .050″. 109/103 Degree Lobe Separation Angle. 0.563″/0.546″ Valve Lift.
– (16) GENUINE GM/ACD PERFORMANCE 12499225 LIFTERS
– 1) PREMIUM UPPER HEAD GASKET SET – MULTI LAYERED STEEL
- 2 years warranty
- Delivery time: 1-2 business days
- Free 90 days return
Description
Description
The Competition Cams 54-601-11 Mutha’ Thumpr hydraulic roller camshaft is built for GM LS Gen III/IV engines and is designed for drivers who want aggressive power gains and the unmistakable, legendary Mutha’ Thumpr idle. With .563″ intake / .546″ exhaust lift, this cam dramatically increases airflow through the heads, allowing your LS to take in more air and fuel while pushing exhaust out more efficiently. The result is stronger throttle response, harder acceleration, and a more forceful overall engine character the moment you drive it.
Its 227° intake / 241° exhaust duration @ .050″ gives the valves extended time open during the intake and exhaust cycle, improving cylinder fill and high-flow efficiency. This produces solid mid-range torque, a powerful top-end pull, and a lively, eager-revving driving feel that completely transforms your engine compared to a stock camshaft.
The tight 109° lobe separation angle (LSA) is what creates the famous Mutha’ Thumpr lope — a deep, choppy, rowdy idle that dominates the sound of the vehicle. This cam produces a hard-hitting, attention-grabbing exhaust note that LS enthusiasts love. Properly tuned, your LS will shake the ground with that classic Thumpr personality while still being usable for street/strip builds.
Designed for engines with supporting mods such as increased compression, a higher-stall converter, good exhaust flow and proper tuning, the 54-601-11 is a proven way to give your LS a brutal performance tone and real seat-of-the-pants acceleration gains. It’s the perfect choice when you want the sound, the power, and the attitude that the Mutha’ Thumpr series is known for.
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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