COMP Cams Mutha' Thumpr Hydraulic Roller Camshaft - 107 LSA - Small Block Chevy Gauge Dimmer Switch & 21-3) are not sold

& 21-3) are not sold separately

This lightweight

1987-1991 Ford E-350 Econoline Custom CID 460 Naturally Aspirated GAS

Gibson Single Side Exhaust is perfect for improved acceleration

Its progressive layering provides great filtration efficiency and dust holding capacity

COMP Cams Mutha' Thumpr Hydraulic Roller Camshaft - 107 LSA - Small Block Chevy Gauge Dimmer Switch & 21-3) are not soldDesigned 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