Ken Glowacky

Have a 84 rear end I took out of a corvette many years ago. Was wondering if anyone can post the rear end codes for this year. I want to use it but need to determine the ratio to get the computer set up correctly. Thanks. I will have to go to the shop to get my numbers. Thanks

xrcrx

All but about 450 or so '84 vettes had the 3.07 D36, the lucky few got a 3.31 D36. That's about 1% of total production.

CFI-EFI

The RPO code #HE3 was in the 51,137 that came with the standard 3.07:1 diff. The other 410 had both RPO codes G92, performance ratio and GW4, for the 3.31:1 ratio. There are numbers stamped on the bottom of the carrier that either are, or will decode, the ratio.

RACE ON!!!

xrcrx

I'm at work so had to pull that outta memory, couldn't remember the actual codes-thanks for the #'s-committed to memory now

Ken Glowacky

Thanks everyone. The car I took it out of was a plain jane corvette so my guess is 3:07. Will confirm in the morning. Thanks again.

Ken Glowacky

Finnally got to look for the rear end code. The number I found was D117. Is this the code??? Or do I need to keep looking and where? Thanks

CFI-EFI

No. Whatever that is, it is meaningless for the diff ratio. Where are you looking?

RACE ON!!!

Ken Glowacky

I am looking right in front of the middle of the spring where it bolts to thr rear end housing.