Does anyone know what the stock rearend ratio is in a 1985 4WD s10 blazer with a 2.8L v6 and a 700r4? or does anyone know how can figure it out?

Thanks

 

There's a code for it on your glove box sticker. They are Regular Production Option codes aka RPO codes. You have to get the code and there are websites to interpret them. Try this one. Here's the link. If you don't still have the sticker, good luck although I have never seen one come off. Everything is on that sticker including the original paint codes.
http://www.nastyz28.com/gm-rpo-codes/

 

^^ true best (easiest) route is to decode your RPOs. they came with different options offered.

as for the other (harder) way search "how to find your gear ratio" and you should pop up a few threads walking you through how to count tire spins vs drive line spins and marking things and such to find it.... <-- not as hard as reading that though

 

Dont take the above link to literally, Im pretty sure my blazer does not have a 425 V8 with economy equipment lol.

 

This link will tell you pretty much everything about your blazer. All you need is your VIN number

Click: Here

 

also there is a decoder linked in the tech area as a sticky