Hello all,
I have a rear end starting to get noisy, I just had the oil changed and they said they checked the level, it was a little low, but now much the guy said.

SO...

If I change out the read end is there any better then the other... besides the 9c1 (8.5 I think it is) Anyways if I go wrecking yard hunting, I may as well look for a change now if I am going to.

What about gearing, the stock I think is 3.08, is there a better option that came in another car/year?

3.08 is probably the best compromise between tire-smoking torque and $4.25/gal gasoline usage. You might be able to go with a 3.42 but in my experience, it didn't add a lot of 'oomph' to the car, certainly not enough to justify the increased fuel usage (went from 19/gal highway to 16/gal highway). You haven't told us what you are driving, so I can't help you as to what you have.

Your 91 should have 3.42s I believe. Take a look at your SPID and look for a code there like GU4 or something similar.

Let's figure out what you have now before swapping something out.

Speaking of rear ends and gas prices, That 2.73 reary in my car that I wanted to get rid of for so long... It's never looked better to me right now. :grinyes:

Sorry I have the 91 Caprice, I will check the code in a few minutes...

I did find a GU4 code, amongst many others. lol But there is a GU4. That likely mean 3.42?? That's not bad, maybe i will see about having the rear end fixed then...

Gu4 = 3.08
Gu5 = 3.23
Gu6 = 3.42