Gear Ratio ???

[gregg72340]

Originally Posted by gregg72340

Yup its an Oldsmoboggle diesel mess, but hey it was free so its worth at least a look, Im gonna have to take the cover off it and see what it is in the spring, just was curious if there was some set gear for it, I just got it 3 weeks ago and its buried in 18 inches of snow right now so its more a curiosity than anything right now, but hey hopefully its at least better than the 2.67 in the truck now .....

Ok this doesnt sound right to me pulled it apart this weekend and counted all the teeth four times and it came out the same to 3.15...........am I missing something here? Has GM stamped on the ring gear so its original???????

What do I have?

[C-10 simplex]

Sorry it took so long to respond. i really don't know much about rear axles but i wish to learn.

So how many teeth are on the ring and how many are on the pinion?

Also, i'm thinking? (hoping) that the number may be stamped somewhere on the ring?

[gregg72340]

Originally Posted by C-10 simplex

Sorry it took so long to respond. i really don't know much about rear axles but i wish to learn.

So how many teeth are on the ring and how many are on the pinion?

Also, i'm thinking? (hoping) that the number may be stamped somewhere on the ring?

Its 41 and 13.............There is GM stamped on the ring gear and an 8 and 1 but that is it nothing else, im just stumped on this one

[chopped81step]

A 41 ring gear & 13 pinion = a 3.15