Manley 42111 Camshaft Thrust Button for SBC Roller

Manley Camshaft Thrust Button, SBC ROLLER .810-20 Manley Roller Thrust Buttons and Aluminum Camshaft Spacers are designed to precisely control camshaft endplay in high-performance engines. The roller thrust design reduces friction and wear against the timing cover, while lightweight aluminum spacers provide accurate cam positioning and durability under load. Ideal for street and race applications, these components help ensure stable valvetrain operation and long-term reliability. Prevents camshaft from walking forward in the block Some Small Block Chevys require the center hole in the cam sprocket to be enlarged to .875” diameter