COMP Cams Thumpr Hydraulic Roller Camshaft - 107 LSA - Ford Cleveland / Modified Youth Head & Neck Restraints integrated radio connection plug

integrated radio connection plug

Includes timed vacuum ports

Two 4 in / Two 6 in / Two 8 in Bend

1976-1978 GMC K25

COMP Cams Thumpr Hydraulic Roller Camshaft - 107 LSA - Ford Cleveland / Modified Youth Head & Neck Restraints integrated radio connection plugDesigned 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