The part# coincides with the color scheme coding on the respective cam sets.Ģ000-up pinion gear part number is (24047-00) as appearing in the 2004-up parts catalogs.ġ986–1987 pinion gears have a (6-spline) pinion shaft.ġ988-up pinion gears have no splines and have a notch out the back side (not under) to slide around a woodruff key on the non-splined pinion shaft.ġ986-1999 pinion gears have the same coarse (13) tooth pitch.Ģ000-up pinion gears have a fine (23) tooth pitch.ġ986-1999 cams continued the color coding as in previous years for optimum noise reduction in the gear mesh. However, a gear could be ordered from the MoCo. There is no reason to use Loctite on the nut.ġ986-2003 parts books do not list a part number for the pinion gear and it appears the pinion gear is part of the cam gear set (not sold separately).
Use red Loctite on the shaft threads per the manual but don't just slather it all over the threads.Īll it takes is a light bead around 2 or three threads (in the middle of where the nut will end up when tightened. They highly recommend using 70 ft/lbs of torque instead 45) (as do other performance shops, Zippers cam instructions etc,). Per Hammer Performance, that has proven woefully inadequate to hold the pinion gear in place (esp. The factory torque spec on the pinion nut (35-45 ft/lbs). That little nub is not nearly strong enough by itself to keep the gear from shearing on the pinion shaft.Īnd instead, it's the clamp load from the nut that keeps the pinion gear where we want it. The 1988-up pinion gear is located by a little nub of the key that sits under the oil pump drive gear. Pry the tabs on it up to remove the pinion nut, bend them down against the flats on the nut to install. There is a lockwasher (7044A) between the nut and the pinion gear. The 86-87 pinion gear is located by 6 internal splines mating between 6 external splines on the pinion shaft.