Rear Axle Ratio

[dewey]

Hi Everyone, I have had my 1977 corvette for 2 years now. I have been restoring it slowly. It is a L-82 4 speed car. But anyways my question is, I received the dealers invoice and this is what I have.

It has the FE7 and G95 options. The question is what axle ratio is for the G95 option. All it says is Highway Axle Ratio. I have been searching with no luck. Also I looked on the rear for the rear axle ratio letters, and can't seem to spot them. Are the letters on the bottom of the differential?

Thanks for any input Steven

 

[6880 Mike]

You should find a code stamped on the bottom of the differential:
OA 3.08
OD or LR 3.36
OB 3.55
OC 3.70

I'm guessing the "Highway axle" is 3.08.

 

[JohnZ]

The ratio code and assembly date are stamped on the as-cast bottom flange of the diff housing, between the spring retaining plate and the camber strut rod bracket - it'll take some cleaning to see it.