Camshaft Kit - 635 H.O. - Chain Drive - Twin Cam

High lift camshaft for modified engines with 106" or greater displacement and compression ratios between 10.0:1 to 11.0:1. Works with stock, unported heads, but S&S CNC ported heads are recommended. Best power from 3000-600 rpm. This is not a bolt in camshaft kit. Kit includes camshafts, bearings, gearcover gasket, retaining ring, o-ring, thread lock and instructions. Made in the USA. Installer must check coil bind, valve to valve clearance and valve to piston clearance.