GM Thumpr Series Cam and Lifter Kits by Comp Cams
Part #: CL11-601-4
Comp Cams B/B Chevy 287T H-107 Mutha Thumpr Hyd. Flat Tappet Cam & Lifter Kit
Part #: CL12-600-4
Hydraulic Thumpr High performance street, stock converter ok, best with 2000+ converter and gears, choppy/thumping idle.
Part #: CL12-601-4
This kit is high performance street/strip, needs 9:1 CR, 2500+ stall, intake, gears and headers. It has a rough idle.
Part #: CL12-602-4
It is street/strip, needs 9.5:1 CR, 2800+ stall, intake, gears, and headers. It has a very rough idle