I have an open rear on my 67 (2.56 I think) and I also have a posi rear with 5.14 gears.
What I want is a mid 3.30ish rear posi. I'm really ignorant about differentials. My question is:
Which differential should I use to make what I want and which will be the least expensive? The open rear is currently in the car and the 5.14 rear is currently set up for housing floaters and ladder bars, so I would have to grind those off.
I had a 256 open my my 68 400 with AC. (Only a 256 was available on AC 400 cars.) To keep mine looking stock, I used the original housing and installed Eaton 355 posi internals. So, still have the "XB" housing with much better performance. My local rear end guy charged me about $1,200 for the parts and set-up. Prior to rebuild, I sand-blasted and epoxy primed the rear-end. After the rebuild I painted it. It looks great and performs better.
