| Re: Looking for a 9 blot 3.45 ring adn pinion. They did make a factory 3.70. I had one before. If I recall it was an '85 rear end.
I also had a 85ta that had a 3.70 geared 9bolt and it didnt hum. was strange gears though.
Good luck. Hope ya can figure it out or get a set of stock 3.70's
I have a 3.45 9bolt in my car now and would love 3.70's again but Im not at the point where I want to tear it apart right now to swap. or I would.
__________________ 92 Vert | 383 LT1 , Ported heads | Callies crank & rods | JE Pistons | Novi 2000 supercharger | 125 Shot Nitrous | SLP Headers | Alloy Engineering Strut Mounts | spohon adj. trq arm & T56 cross member | 9bolt with 3.45's |