i was thinking about put 4.10's in the rear but im affraid i will destroy my transfer case if i go to put the 4x4 on during the winter with dif gears in front...and body replace the front and rear or anybody got any ideas?

 

You cenrtainly need equal gears front & rear if you go 4x4...

Why the urge of 4.11 gears? If you want rocket launches, consider replacing the stall converter with a higher rpm one...

 

yeah but i still wouldnt have posi in the rear..

 

if you're goin to change the rear gear ratio, you MUST change the front. i take it you are getting a used rear posi unit? if thats the case, then you can unbolt the ring gear off it and put your original one back on.

 

I have a 4x4 with posi (limited slip), but no 4.11 gears. (I have GT4 axle rear, 3,73 ratio (dup with 5 x 1) and G80 axel positraction, limited slip)

Maybe you should shop around for one of these, or better, find and G80 optioned rear axle with your current ratio.