Product Description
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 always puts the engine in its powerband. AdditionallyCatalog
User 1
Product Videos
Custom Field
Category Engine Components>Camshafts
MPN 11-601-8
Clearance Item N
