Are 8.5 A/G body rears really that hard to find???

[79Hurst/Olds]

I am just getting back into the car hobby, my last cars were Mopars and my last GM I put a 12 bolt in. I would like to put a 8.5 into the Hurst/Olds but you would think I could do better finding the Holy Grail for a Hood Ornament!!!

 

[SBCregal]

didn't the hurst/olds cars come with a 8.5?

 

[illregal82]

not until 85 i think

 

[85_SS]

The 84 H/O, the 85-88 442's (3.73) and the 84?-87 Turbo Regals (3.42) are the only G-bodies to get factory 8.5" rears. POSI was an option on all.

 

[BB Olds]

cutlass calia ? and 350 diesel cutlass ? I am 99% sure that these cars also had 8.5 rear

 

[clean8485]

I don't believe that the diesel cars got the 8.5" rear axle. The diesel cars were not particularly powerful, so there was no reason for GM to use that axle in these cars. Besides, GM stopped putting diesel engines in the A/G bodies in the early '80s. As far as I know the diesel engine option was discontinued prior to the first documented use of the 8.5" rear axle in the G body cars.

 

[LedPhoot]

8.5 G BODY REARS ARE GOLD these days !!! The last three I've found on Ebay sold for $750-$1000. I can buy a 9" ford housing built to fit and build the rest for just over that kind of money and have a better rear and an easier to swap gear chunk so I can go from 3:08 - 4:30's in an hour.
Diesels were 7.5 as well by the way... and 12 bolts are outrageously priced too these days because anything rear wheel drive nowadays has become crushweight and this stuff is being hoarded by collectors and restorers.
Damned Gov't wants us all in ricecookers with fartcans or peddling bicycles like our neighbors in the Far East... so they stimulate steel prices to promote recycling "aka CRUSHING OLD CARS" and ship shredded cars to foreign countries and ship back goods and steel...

 

[pontiacgp]

you can buy the 8.5" new for 600 non posi and 900 with posi drum to drum..


http://www.gbodyparts.com/index.php?cPa ... 12d79a2055

 

[hobbes442]

i should just pull my 12 bolt out with southside conversion bats and sell and buy 9 in also . had new 4.10 richmond gears and new auburn posi what are 12 bolts bringing?

 

[beermonkey9417]

their free, so can i have it? haha 😀