Comp Cams Camshaft, FE 283TH R7 THUMPR  Heavy Metal Off-Road 7L engine sizes

7L engine sizes

Featuring the industry-leading ARMAX design

Structured front panels for a comfortable

75" x 3" (16

long exhaust duration and a generous amount of intake and exhaust overlap - maximizing the rough-idling characteristics of the cams without negatively impacting power or streetability

Comp Cams Camshaft, FE 283TH R7 THUMPR  Heavy Metal Off-Road 7L engine sizesThumpr Camshafts are available in three different grind profiles, each one of which will produce a rough, racy exhaust note and impressive amounts of horsepower and torque at a different rpm range. Their cutting edge hydraulic roller design means that they will deliver a substantial power increase over an identical hydraulic flat tappet grind without sacrificing reliability or ease of maintenance. So look no further than the Thumpr line of camshafts