Putting a set of 3.73s in my 92 soon. Just going to use the whole centerchunk out of my 99 so I will have posi also. Question is what tooth count/gear will I need for a 3.73 setup. I saw something on this site about the math and figureing out the tooth count you will need for gear swaps but It seems a little confusing to me. I figure alot of people have done the 3.73 swap and will know the tooth count that I will need.p

 

ring gear 41
pinion 11
41/11 = 3.7272727272

 

Sry I just read my post. I forgot to say im trying to figure out what tooth count I need for the trans for the speedo to read correctly

 

This is what I was gonna use before I did my LS swap.
44 tooth drivin gear - grey - OE# 9780470
15 tooth drive gear - grey - OE# 8642620

I never tried it but after my research this is what I would start with.


^^^This is for a 700R4 Application.^^^

 

He needs the T5 version. For the electrical speedo I think the driven gear is discontinued but the drive gear is a 7 tooth blue.

 

I do have a t5 if that matters

 

Don't we have a sticky for that?

 

Yea I think so. Like I said I read it but it was really confusing

 

I haven't looked at it, so I didn't know. Years ago my GM dealer had a chart that converted everything for the correct gears.

 

Now why did I not see that