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Duotone panel — violet briefing on the left, lime-sealed detail sheet on the right.
1976-1978 GMC K25
JOES TubeClamp rotates every 22-1/2 degrees so you can put it almost anywhere
Includes timed vacuum ports
300mA or More of Current Drawn When Motor is Off
ProClassic Hose
COMP Cams Thumpr Hydraulic Roller Camshaft - 107 LSA - Ford Cleveland / Modified Youth Head & Neck Restraints 1976-1978 GMC K25Designed 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