transfer case on a 90 w/ 4 bolt rear

[versatileperf]

hey all i have a question ive got a 90 awd and i want to put a 4bolt in it, what are all the parts i need besides rear diff. axles cups ? do i need to change up the xfer case or what please help me out asap




thanks
brent

 

[iamtall77]

There is no need to change anything else. unless of course you get an AT rear or MT rear with your AT. the gear ratios are different on those. the only difference in 90 and others is the spline count on the transfercase input shaft and the output shaft on the tranny. 90 is 22 spline (91 as well i believe) and all others are 23 spline. if you are just swaping rear ends there is no need to change anything else.