635 H.O. Chain Drive Camshaft Kit

High lift camshaft for modified engines with 106" or greater displacement and compression ratios between 10.0:1 to 11.0:1Works with stock, unported heads, but S&S CNC ported heads are recommendedBest power from 3000-600 rpmThis is not a bolt in camshaft kitKit includes camshafts, bearings, gearcover gasket, retaining ring, o-ring, thread lock and instructionsMade in the USAInstaller must check coil bind, valve to valve clearance and valve to piston clearance