I have a 1994 auto with 2.73 is there a way to tell if you have a 7.5 or 8.5 without opening your rearend up. I call a Chevy tech and he said the only way is to measure it once its taken apart. True or false, Thanks

 

its a 7.5 inch. when you order your gears, you will need to order them for 7.5 or 7 1/2 inch 10 bolt, for the 2-series carrier. 3-series carrier, is for the guys with 3.23's stock.

 

Well, you could take it apart to find out, but since it's a 4th-gen, you should already know that it's gonna be the 7-1/2" 10-bolt. I don't think anything bigger came in F-bodies since 2nd-gens, which still had the 8-1/2" 10-bolt.

As was just stated above, you need to order 3.73's for a 2-series carrier...........not a problem, as most brands build for 2-series and 3-series carriers.

 

The GM tech told me it came with both for the 2.73 7.5 and 8.5 and the only way was to take it apart to measure it. I might call another Chevy palce to ask a different Tech. Thanks for the replies.

 

Not a '94 . That would be the biggest "news" I've heard in a long time if that were true! Trust me dude, you've got the 7.5" just like the rest of us . That's why everyone upgrades to 12-bolt diffs eventually.

 

Thanks for the info.

 

The only camaro that came with an 8.5 rear since 81 is the 1LE cars. You would know if you had that car.

 

This is whats scary he works on cars and gives me wrong info yikes.