Yes, they kept getting a bit stronger as engines got bigger. Best one would be behind a V8 Camaro. There are lots of good articles on these tranys, even found some good info on Youtube.
I'm sure there is some tech info here. I'd do a Google search as well.

It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed