Harland Sharp Roller Rockers

The ultimate rocker arm for the 6.5L to replace factory stamped steel sets, center rockers on valves, and remove unwanted valvetrain play.   Key Features:  16 shaft-rocker arms with roller tips Quadstar exclusive laser engraved logos and ratio Ratio (specify when ordering): 1.5:1 Ratio for stock replacement roller rockers The factory ratio is 1.5 1.6:1 Ratio for slightly increased valve lift Valve clearance should be checked on a full build You can upgrade to 1.6 without clearance issues in MOST situations.  Assuming the engine is totally stock with no changes, 1.6 rockers will be fine.   1.7:1 Ratio for extreme builds Pistons must be modified for valve clearance 1.7 has a longer wait/custom order lead time Billet spacer kit for alignment Shims may need moved around during initial fitment testing to center the rocker arms on the valve tips. This is a normal step for installation. Latest revision for a trouble-free installation Eliminates need for the factory plastic rocker