72barracuda
Well-Known Member
Hi everyone, first I want to thank everyone for all the helpful comments over the years and the shared interest in our old Mopars. I am wanting to change out the 3.91 gears that I had installed many years ago for 3.23 which is a better match for my needs these days. I want to be sure I get the right gears for this 489 case since I am wanting to provide the parts for a local shop to do the work. Can I assume that any 3.23 gears for Chrysler 8 3/4, 489 are going to work? I see pinion spline count specified on some sets. Were pinions with different spline counts used in this housing? Looking at Yukon set on the link below. This seems a lot more cost effective than paying over $3000 for overdrive add on or $1500 for a second third member.
Chrysler 8 3/4 Tapered- Ring and Pinion
Chrysler 8 3/4 Tapered- Ring and Pinion