The COMP Cams Big Mutha' Thumpr 243/257 hydraulic roller cam is designed for aggressive street/strip performance with strong mid-to-top-end power. It requires approximately 9.5:1 compression and a 2,800+ rpm converter stall to reach intended behavior, and will make a very rough idle. Plan supporting intake, gearing and header upgrades to complete the build.
COMP Cams Camshaft Kit CS 299T HR-107 B