8.25 rear

Buddy of mine made a RR clone out of 71 Satellite had an 8 1/4 w a 440 4 speed. Took his abuse for a good 6 yrs with no problems. Same guy had a built 360 in a 1/2 ton 8 1/4 and that seemed fine. I think 8 1/4s are tuffer than people give them credit for.