I need a new pinion yoke for my 71 8.5 skylark rear. I don't really have an easy way to take mine off because of where it is parked and the fact that it doesn't move on it's own.. The guy at the driveline shop is not sure which one it is on my car.. He wants to know the spline count. ID, OD,and the depth of the splines??? Maybe someone here can just sell me one??? MONZAZ??
Jay, Looks like 30 spline, http://www.jdrace.com/diff_id/10b85.htm Does that help any. Monzaz (Jim) phone # is (330) 990-8155
Yes.. That backs up what I found on another site. Apparently there are different yokes dependant upon the different size u joints??? http://www.driveshaftspecialist.com/PinionYoke/PinionYoke.html
Hmmm.. OK.. Now i'm confused.. JD Race lists the pinion diameter as 1.625 Driveshaft Specialists list the spline diameter as 1.312 for all the GM 8.5 10 bolt rears Wouldn't that be the same measurement??
I believe the pinion diameter would be the thickest point of the pinion shaft, not near the splines. I believe the 8.5 10 bolt and the 12 bolt both have the same pinion shaft diameter, 1.625.
