COMP Cams Mutha' Thumpr Hydraulic Roller Camshaft - 107 LSA - Small Block Chevy 91629029 you also get the Cloyes

you also get the Cloyes patented "Cheater" sprocket tooth profile that provides better chain wrap and a smooth transition

allowing operation at up to 70

The 4113 balaclavas are made with a single layer design featuring one large eyeport

and your ready for adventure

Installation kit includes O-rings and gaskets

COMP Cams Mutha' Thumpr Hydraulic Roller Camshaft - 107 LSA - Small Block Chevy 91629029 you also get the CloyesDesigned to deliver an aggressive, hard hitting exhaust note at idle, the Thumpr camshaft series from COMP Cams also delivers excellent horsepower gains and a broad torque curve. A perfect choice for muscle cars and street rods, the Thumpr series' early intake valve opening and long exhaust duration create optimum overlap for that race car idle. The Thumpr grinds all require an aftermarket torque converter and lower gear ratio to ensure the drivetrain