different gear RATIOS ??

[BLACKDRAGON]

different gear ratios??
Are there differnt gear ratios in the rear ends between the 1G's?? ive got a 90 trany and im going to be putting it in a 91, shouold I change the rear end too? I wouldnt this so but i just want to make sure.

 

[GRNDSM]

All 1G 5sp had the same gear ratios. But automatics were different. So as long as you are not switching from auto to 5sp (or from 5sp to auto , you should be OK.

But you will have to keep track of trasfer cases (or splines on transfer case shaft). 90 transfer case (22 spline) will not fit on 91 tranny (23 spline) with out also keeping 90 transfer case shaft.

Leon
RR