i hve a 1991 chevy camaro z28 drum brake rearend i took the 2.73 rear gear out and went to swap it with the 3.42 out of a 83 v6 5spd firebird it dont seem to fit i thought id swap right in help
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oh yeah i used my carrier and axels in my housing

 

Welcome to TGO. There's a difference between series two and series three carriers. A search will provide more info.

JamesC

 

Your 2.73 carrier is a Series 2. Works fine up to 3.08. Any ratio with a higher number than that requires a Series 3 carrier.

You have 4 choices:

1) Swap the carrier AND the ring & pinion from the V6 car to yours (but I'm guessing the V6 car's carrier is an open diff, right?) Free, but you're left with a peg-leg

2) Buy a new Series 3 posi carrier to work with the 3.42 gears. This can be expensive if you buy a new carrier. Used ones can be picked up on Ebay. Just stay away from anything that says Eaton G80 or GovLok.

3) Buy a "thick" ring & pinion (I got mine from Randy's Ring & Pinion for $169) to fit your current Series 2 carrier. Obviously, this was my choice.

4) Buy a ring spacer to put on the back of your ring gear to make it thicker. I have heard serious horror stories about this and don't recommend it. One story even involved a death.

Welcome to TGO. Wealth of information on here. Lots of BS too lol. The "search" feature can be your best friend!

 

I think I will do a gear change, and the parts don;t fit. I wonder why???

 

Uncalled for.

 

i ended up buying the spacer just for now dont have the money to buy new carrier right now and as far as the rude comment i have the experience but it on ford rearends i never dealt with a chevy rearend

 

Be careful if you put down the power.