Originally Posted by cobalt327
Last I knew you had a TH350C.
From my notes- I don't know who to credit it to: "55-56 had 3.70 with a standard trans, 4.11 with the OD trans, and 3.55 with the auto trans. In 57 they went to 14 inch tires and then they used a 3.55 with a standard trans and 3.36 with the auto trans."
When I did the walk alongside while watching the driveline, I know it was less than 3 and 1/2 turns, I actually thought that it was real close to 3 and 1/4, so it most likely is the 3.36:1 ratio. Thanks, Big Al