Join Date: Jan 2000
Location: Houston, TX USA
7.5" Rear End-What Carrier/Pinion Shims?
Hey guys & gals! I am working on a 7.5" rear end for a friend of mine. He has asked that I help him install a set of used gears he has that came with the car. Apparently they are the original gears, and someone has swapped in something in the 4 series range. Anyway, I had a couple of questions to ask.
1. Are the carrier & pinion shims the same/similar as to what a 8.5" 10 bolt, or 12 bolt uses? If so, I have a bunch of those around here.
2. What should the back lash be set at? I know 12 bolts are normally .008-.012, 8.5" 10 bolts .006-.010. What about the 7.5"?
3. Anything different about setting these up that I need to be aware of? This will be my first R&P install in a 7.5".
I believe (have not yet dropped the cover to see) that someone used his original open carrier, and added a ring gear spacer to use the higher gear. I will confirm all of this once I start working on it. I just wanted to have the right parts on hand before I begin the work.
1969 383CI, T-56, 12 bolt-3.31 posi, 13" C5 Rotors, PBR Calipers, rear disc system..