Might've been the ratio too. Either way, now I'm curious too.
I know there's a 16:1 ratio saginaw box. One full turn of the wheel would equal 11.25º of pitman arm movement if I'm understanding that correctly?
My 2F struggled at 60 as well with that setup. I'd like to drive a really healthy 2F at some point. I've got a R2.8 now, and it'll go faster than I want to.
H55 with a split case is what most do. Available new from Toyota.
1st is lower. 5th is an overdrive, but .85:1 comes to mind, so not much of one.
Low range is lower as well I believe.
I did not do the conversion on mine, I purchased it that way, so I do not know what it all entails. I do...