legacycentral bbs

Hello all,

I'm sure this has probably been beaten to death before but, in an automatic tranny with the original 3.90 rear end can i just simply exchange the pumkins to a 4.11 setup or must i take out the ring and pinion gears and exchange them in order to get it to fit?...... next question is will I bind the transmission by increacing the rear end like i want to do, it was brought up to me that the front and rear gear ratios must be the same in order to not cause binding. is this true? I appreciate any input that is avaliable, I am very new to the AWD scene last 3 cars I have owned were all RWD so im next to lost on this issue......

Rob

Front and rear's MUST be the same in order for the car to drive for more than a few hundred feet. If you don't, your center "diff" will eat itself to smitherines.

If you want a 4.11:1 final drive ratio, you must change the front diff as well. Also, you COULD change the whole rear diff, OR you could just swap the ring and pinion.

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