Rear gears?

[ddt4436]

I just pulled the differential from my 91 gt. It has the numbers 41*11 1345/02 stamped on the side of the ring. Does anyone know what those numbers stand for? There is also a 25 on the opposite side?

 

[bubba-dough]

What exactly do you want to know for? The gear size, make, or what? There is metal tag attached to a bolt on the rear cover that gives the stock gear (if it was still there chances are the rear was completely stock and you could go by that coding). Or you could mark a tire and the driveshaft and see how many times the driveshaft spun compared to 1 turn of the wheel.

 

[dcurtis]

The 41-11 is or should be the number of teeth on the ring gear and the pinion gear, 41 ring and 11 pinion making your gears 3.73's

 

[ddt4436]

The 41-11 is or should be the number of teeth on the ring gear and the pinion gear, 41 ring and 11 pinion making your gears 3.73's

Holy Sh....! Thanks so much man now that was useful info by a true mustang guru. I was about to throw them in the junk pile! You are my hero man!

 

[dcurtis]

To figure out the ratio of the gear all you have to do is divide the number of teeth on the ring gear by the number of teeth on the pinion gear.