This camshaft thrust button installs in the front of the camshaft on 1965-1990 Big Block Chevy 396-454 engines and rides against the timing cover to stop the cam from walking in and out. It is a must for roller camshaft installations, where there is no lobe taper to hold the cam in place, and it helps keep ignition and valve timing steady in any cam swap.

Mr. Gasket 1181 Camshaft Thrust Button Features:

• Keeps the camshaft from walking in the block
• Essential for roller camshaft installations
• Helps maintain accurate cam timing
• Aluminum construction with natural finish