Ok I got em

I belive it is 3JH C209 1 and I think it is an 87 Firebird rear..

I hope those work for ya

Thanks again

Kat

------------------
90 RS 305 TBI A4
Dumb ***/**** poor/orginating memeber of the infamous NE Crew
Time to see, believe this in me,This pain that i feel deep inside

 

Kat,

I looked through the entire rear axle code listing from 1982 thru 1992 and cannot find one that starts with a "3". The closest I could find was a listing for a 1984 Camaro. It is a 6JH, which is a 3.23 open ratio. BTW, make sure the "C" is your code is not actually a "G". "G" signifies Chevrolet Gear & Axle Plant, which it should be (I presume).

Willie

 

Thanks again..

When I was under the car looking at the stamped #'s on the rear it seems like that they didnt stamp the houseing all the way. So the # 3 thats waht it looks like. So your ar prolly right in it being a 6 tho..

Thanks again I really appericate it!!!!!

Kat

 

Kat,

You're right about the stamping being very weak. I have never seen a rear axle tube that was stamped anything but just scratching the surface. You've probably already tried this, but I've found that if you take 400 grit sandpaper and lightly go over the stamping, it brings out some of the detail. Then take a flashlight and shine it almost parallel (not directly) onto the axle tube, it highlights the stamping. I should have mentioned this before. Sorry about that.

Assuming your speedo is correct, you can verify rear axle ratio. If you would like to do this, let me know.

Willie

 

I did do the sand paper trick tho to bing out the other 2 #'s. I'll take a picture of it tommrow and I'll post it up here for ya to see if you can see anything that I cant.

As for the speedo being off Umm yeah it is wayyyy off.. I was following a friend of mine the other night. Called hin on his cell and asked him how fast he was going.. Well I was doing 80@ about 2400RPM and he was doing 65@ about 1700rpm. Also too last week I got pulled over for doin 75mph and the speedo said 90.


I will have that pic fo ya tommrow.. Thanks again for all your help

Kat


------------------
90 RS 305 TBI A4
Dumb ***/**** poor/orginating memeber of the infamous NE Crew
Time to see, believe this in me,This pain that i feel deep inside