Moroso Cam Button Kit, Sbc Early Cover

Professional engine builders are familiar with camshaft walk — when excessive end play produces erratic spark timing and the timing chain/gear eats the timing cover

Moroso solves the problem with a highly wear resistant button mounted in an aluminum holder and bolted to the cam timing gear by way of a retaining plate

The button assembly does not allow the cam to walk forward, stabilizing ignition timing and preventing costly engine repair