donnie1956

What is stock rear end gear ratio on a 78? How or where is that info found on the car?

joewill

3.08 or 3.55, don't know which is stock. the data is not found on the car unless you have a tank sheet or documentation somewhere.

get the numbers off the rear carrier and we can tell you what the numbers mean.

Mike Ward

Ratios available were 3.08, 3.36, 3.55 or 3.70 depending on engine, transmission, delivery state and/or altitude (believe it or not)

...Roger...

If your wanting to know whats in your car at present you can find that out by counting the driveshaft revolutions to rear wheel revolutions or you might try recording your RPMs on the highway at certain speeds and posting that here on the forum,someone will have the same speed to rpms. Basically only 4 choices.