ChevyRacer

Well, I have an 86 Borg Warner 9bolt with 2.73 rear end.

Last time I got to do a brake stand only one wheel spun. And last time she was on a lift I spun one wheel and the other spun in the opposite direction. It used to never do that.

I know 9 bolts are expensive to build and find parts for, But I like them. How much is it looking to cost me if I get a used 9 bolt carrier at a junkyard and rebuild the actual part I got, and just place it in mine once it’s finished (excluding the carrier costs?)

I don’t have machining tools, or any of the sort. I like the 9 bolt since its stronger then a 10 bolt (maybe not rated much higher but we all know it can take much more).

What are my options? Also, how would I go about getting gears such as 3.23? Why do gears in a rear end need replaced, if the ones I find are in decent condition they can be reused right?

Orr89RocZ

iTrader: (20)

i thought the 9 bolt was only in 87-89?

and they had 2.77, 3.27, 3.45, and 3.70 ratios

i have no clue where to get rebuilt parts for them. you can buy gear install kits including all the bearings and stuff to get a new ring gear in but actually posi parts i dont know of.

there was a sight selling the spyder gears and such
Ratech manufactoring i think

also randy's ring and pinion sell 9 bolt gear install kits and such

QUICKCHICKEN

iTrader: (12)

Miles sells replacement carriers and IIRC replacement cones to fix your slipping problem.
WWW.9BOLT.COM or WWW.DIFFSOLUTIONS.COM
they take you to the same site. iv delt with Miles and was pleased. hes sometimes slow on replies as he has other busnesses besides 9 bolt. if you choose to go into the carrier and fix it yourself i have a PDF file on how to do it.

DJP87Z28

Recheck to make sure what rear you have. The ratio and year are incorrect to a certain extent. What model, engine and tranny do you have???

TKOPerformance

Yeah, my '86 IROC Z28 has a 7.625" 10-bolt. If you've got a 9-bolt it was swapped in later.

88 350 tpi formula

iTrader: (9)

86- and early 90 some 85 cars it was an option (2:77, 3:08, 3:27, 3:45,3:70) are found in thirdgens the 2 most common are the 2:77 and 3:27 gears followed by the 3:45 in some stick cars. good luck finding a 3:70 or 3:08 still alive

ChevyRacer

well sorry, but i'm sure its a 2.77. It even has 2.77 stamped on one of the 9 bolts on the cover. Plus my RPO codes show its a 2.77.

How hard is it to fix these things?

QUICKCHICKEN

iTrader: (12)

me and my friend took 2 carriers and built one good one. it wasnt hard but you hafta pay attn.
you will also need your axles to help re assmble it.

Zepher

iTrader: (1)

My 86 had the 3.27 posi disc 9 bolt and it would sometimes do what yours does. the cones (I believe they were cones) were wearing out.

ChevyRacer

Whats a good price for a 9bolt at a junkyard? What like $100?

If i could get a decent 9 bolt with the gears i want, i could probrably rebiuld it out of the car when i have the time todo so.

DJP87Z28

Good luck trying to buy one for $100, much less find one.

ChevyRacer

lol are they that rare?

I have a friend who's dad is selling a 99 WS6 rear end. The thing was fully loaded. and some semi ran it over and they bought it for parts. The rear end i made an offer for $100. They accepted but i told them i may not be able to buy for a short while.

Is it worth it to swap?

I will keep stock rims becuase i like the way the different offset makes the rear wheels stick out.