I got a 1983 f150 that came with a 302
I recently put a 460BB and a C6 transmission from a 1986 F250 into it
My current rear end isn't cutting it, so I wanted to know if anybody know what ford used stock for those years or if anybody could recommend me something.

 

dont understand your ? it keep breakin or you need different gear? my 71 has a 9" w/ 3:89's it works good with a 460/c6

 

thats exactly what i needed to know, thank you