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🚀 Rev Up Your Ride with the Big Mutha' Thumpr!
The COMP Cams 54-602-11 Big Mutha' Thumpr is a high-performance hydraulic roller cam designed for GM LS GEN III/IV engines. With a 235/249 duration at .050”, a 109-degree lobe separation angle, and valve lifts of 0.573/0.558, this cam is engineered for street and strip applications, providing exceptional horsepower gains and a powerful exhaust note. Ideal for muscle cars and street rods, it requires specific engine configurations for optimal performance.
D**N
Idle sounds nice, good chop
Standard quality comp cam. Ground on a smaller base circle, will require longer pushrods. Came with a generic cam card as opposed to a Cam Doctor printout. Idle sounds nice, good chop, and is stable and easy to tune. However, that is about all this cam is good for- it made 380whp in a 11:1 compression LS1 with Fast92/92, 100mm MAF, aftermarket PRC 225 heads, 1 7/8 headers, and all supporting mods.
D**B
Five Stars
Have used Comp Cam products in the past with no problems. Hope to have same reliability.
M**E
Five Stars
perfect
Trustpilot
5 days ago
4 days ago