Some people that rag on the 10B from GM may not know that the truck 10B is a 8.6" ring gear, while the car 10B is a 7.6" ring gear. The car 10B is MUCH weaker. My 99 Z28 had 4:10 gears in it, and tune-only with drag radials was killing it...

The truck's 8.6" 10B is much stronger, it's real weak link is the factory G80 locking diff. You hear about G80 (grenade 80) breakage all the time. Set up properly, with a nice differential, like Eaton Posi, or Detroit Tru Trac, and a girdle, and they seem to hold up pretty well.

 

Get some AklowriderZ71! :

 

Lol, hellz to the YA!!

 

Ok so i need a new locker, ring & pinion, and and instal kit. where is the best/ cheapest place to buy this. Im going with the detroit trutrac and 3.73s

 

use rons machining service. hes a sponsor on here, or look up the website. had the best price compared to anything local to me and shipped for free. ronsmachiningservice.net is the website

 

GM 8.6" 3.73 RING AND PINION TRUETRAC POSI GEAR PACKAGE
Does this look right? idw to order the wrong stuff

 

Yes, that stuff will work for you. Don't hesitate to call Ron and ask any questions you may have. He's very helpful.

 

See if he can get you a stud kit for your main caps. I am starting to install these now. Cheap insurance. Also, the 3.73s set up nicely with a 0.033" - 0.035" pinion shim.

 

Alright guys its been over a month but its finally fixed. I put in a trutrac, 3.73s tht i got from rons. But when i took it for a test drive the tranny was acting all weird such as not shifting out of first. so i had the trans redone because it was still under warranty but for some reason it is hesitating when shifting from 2-3 gear and almost slipping a bit. when i asked the guy who did the work he said it is doing this because the computer is causing some sort of problem and not the new trans? Im not sure what to do about that because the computer and trans were both good before the new rear so im thinking about having it tuned by black bear to get any bugs out of the system. oh and there arent any codes showing up either.