info on the early 8 3/4 pumpkin

I also have a 657 from a 58 1/2 ton truck. I think my ring gear is stamped 3.58.Hard to tell as stamping ain't that great,,close enough for me.They have the small pinion bearing like the 741. I'm sure you can break anything if you throw enough horse power at it. I plan on using mine in my street car.