what rear ends are inter-changable.i was going to buy one from this guy but he said it would not work.i have a 1998 the gear code is a gu6.also if someone knows what ratio is a gu6?

 

I can't remember what the gear ratio is but if you go to a junk yard and match the production codes in the glove box then you should be fine. I took one out of a jimmy or some such thing for my blazer. only difference was that the replacement had wires for abs and the old one didn't, just pulled the wires and everything was hunky dory!

 

im pretty sure a GU6 is 3.42s

 

a 4x4 and 2wd won't interchange. On a 98 you can put any gear you want in it but you will have to have a programmer to calibrate the speedo. If your 4x4 you also need to have the front match the rear ratios.

GU2 2:73 ratio

GU4 3: 08 ratio

GU5 3:23 ratio

GU6 3:42 ratio

GT4 3:73 ratio

GT5 4:10 ratio

GQ1 Open Differential Rear Axle

G80 Positraction/Locking Rear Axle

 

well i think i should be fine,his code was a gu6.he did not say why it wouldnt work,he just said a guy at the junk yard said it wont.his is a 1996 4x4.i cant really think of a reason it wont work..

 

Does yours have disk rear brakes and the other have drums? They still swap out but you're downgrading.

 

i know mine has disk brakes.not really sure on the other one.but i'm saving about 300(local junk yards wants 400+ for them)so if i have to down grade then i will ya know.i wonder how hard it is to (if possible)to swap the drums for disks?

 

Not 100% sure but I wanna say 98 was the first year s-series came with rear disks. From my understanding the brakes swap out easy enough.


My question is why are you so worried about swapping rearends?

 

my rearend is trashed.i got it that way tho.400 bux for the whole blazer from my buddy.i think it was worth it..

 

ok i picked up a gu6 out of a 1995,the only differnce is the drum brakes.i am gunna just swap them for my disks off the other rearend..looks easy enuff!