turbo mante rear?

[RedHotRegal]

I posted a thread awhile back about a Turbo Monte. I was wondering what rear this car probably came with without crawling under it right now (2-3 feet of snow -20 celcius or lower with windchill right now). I can pick it up really cheap (the car) with the origanal engine/turbo setup on a stand. He wont separate the car from the engine/turbo but they are not in the car. I was thinking if they came with an 8.5" rear I would swap my rear for that one then dump the car for a few hundred dollars and not have much invested.

 

[85ss/85gn]

i dont know the gear ratio but it will be a 7.5 inch rear end. the 8.5 inch rear ends only come in 1984 hurst olds, 1985-1987 442 and 1984-1987 grand national

 

[pontiacgp]

to find out the gearing if the label is still there on the trunk lid the RPO code will be listed..


http://www.g-body.org/tnt/diffs/diff-codes.php

 

[RedHotRegal]

I'm good with the gears I got right now. 3.42's. I just wasn't sure what rear it would of came with. I figured if it was a 8.5" I'd swap them and sell the monte. but if its only a 7.5" then its not worth my time.

 

[gmachinz]

Turbo Montes were only in 1980 and 81. I have a 7.5 rear out of one in my '78 and it has held up very well. GM used 3 styles of carriers durign the smog years for the 7.5 and of those, the Turbo Montes had one of the better ones with cone type clutch packs vs. springs type packs. I've got a 1" Richmond spacer with a US Gear 3.73 8.5 ring and pinion. I'd put it up against any other GM 10 or 12 bolt. The weak link is the stock axles, not the carrier style so much but the cone style is worth building. If that Monte has some nice options, I wouldn't mind having it if you are willing to share the info on its whereabouts or a contact person.