Looking to change to posi traction I found a 1964 diff. - 3.07 ratio in good shape - did the re design in 1966 include a change that would make this not fit? Thanks
It won't fit. The big car 9 3/8in posi's are as follows; '61-'62, '63-'65, '66-later (I think thru '70).
Careful here, not necessarily true. Sometime during the 1966 model year one carrier bearing was increased in diameter, making the early '66 carrier unique and not interchangeable with late '66-'70. Devon
I'd be interested in the diff for my '64 Wildcat if it's available. I'd want the center section only.