Originally Posted By Cuda340
Originally Posted By EV2Bird
Im not up on the 4 speed od AL trans but im wondering what wears out, maybe the end of the case? If so im running what was a DC al 4 speed that I think had a nice bushing, ect in the al case. I might have pics prior to install.


The cluster shaft pin wallows out the case and the gear mesh opens up causing failure. You can have the case bushed at both pin ends for more strength.


Yup. I had an aluminum case that was bushed. Just as good as an iron case but less weight.