Big and small block Chevy fuel pump cam hex drive with thrust shims and bearing. This part allows the racer to drive a .375" hex of the end of there small block or big block Chevy camshaft.
Fuel pump drive is made from billet steel and bolts to the cam using a three 5/16-18 twelve point head bolts. Kit includes thrust bearing and a shim kit. Shims are .870" O.D., .690" I.D. The racer gets one .005", three .007", five .010", one .025".