COMP CAMS 202 Nylon Thrust Button for Small Block Chevrolet

COMP Cams Nylon Thrust Button for Small Block Chevrolet. Roller cam lobes are ground flat rather than tapered like a flat tappet cam; it is necessary to provide some means of holding the cam back to the rear of the engine. The thrust button rides between the front of the timing gear and the back of the front cover and can be shimmed for proper end play of the cam. COMP Cams has both the solid nylon button and the roller thrust bearing available for the ultimate in performance.