COMP Cams Mutha' Thumpr Hydraulic Roller Camshaft - 107 LSA - Small Block Chevy XBCXL Fuel pressure rises on a

Fuel pressure rises on a 1:1 ratio when referencing boost

1966-1969 Plymouth Barracuda

transmission swap

racers are constantly searching for the ultimate balance between the lowest weight and the ability to effectively manage heat

1989-1989 Ford Probe

COMP Cams Mutha' Thumpr Hydraulic Roller Camshaft - 107 LSA - Small Block Chevy XBCXL Fuel pressure rises on aDesigned 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