When I get home tomorrow I will try and take some better pictures of the fractured shaft..... As far as wanting to go with the 727, John did not change my mind but he did re-inforce my belief that what you see is what you get......
I broke the shaft once and that is not a good sign. It looks like it is an unusual failure and quite rare so hopefully it was a defect in the shaft that caused the failure. I will try and give this trans one more shot and see what happens..... If it lets go again I am going to install my edelbrock head, hyd roller cam 451 in with a b-727 I have sitting around. This 318 stroker (390) is quite a torquey engine and is in fact larger than a 383 that the factory never put a 904 behind. I have better heads, exhaust, and more cam than any stock 383 so I think I am on the edge with this tranny ...
But I'll give it one more shot. I almost hope it breaks
again as I want to go big block and weld in a roll cage! TBF