I know this much. A Saginaw 4 speed, a Chevy 3 speed and a Chevy 4 speed truck tranny have all been bolted to my '57 GMC 270 with no changes.. I think Chevy transmissions from '39 on are the same. There may be some clutch spline options and throwout bearing choices for lever or diaphragm style pressure plates. There is also a long and short in throw out bearings. But basically what works with your 235 will work with a trans that will bolt to a V8.
