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The Fixer · 01-27-2009, 09:42 AM

1984 Hurst/Olds, '85-'87 442s, and '84-'87 Turbo Buicks got the 8.5" rear. The Olds cars had 3.73 gears, and the Turbo Buicks had 3.42s. Posi was optional on all rears.

If it's truly a G-body 8.5" rear, it should have two "fangs" on the lower part of the center section. Most likely, you found a 7 5/8" rear out of a Monte SS, which would have 3.73s in it. Again, the posi is optional, so make sure that it works before you pay for it.

Good luck with the new G-body!

01-27-2009, 09:42 AM	#7
The Fixer Join Date: Aug 2004 Location: North Jersey Posts: 3,047 iTrader: (5)	1984 Hurst/Olds, '85-'87 442s, and '84-'87 Turbo Buicks got the 8.5" rear. The Olds cars had 3.73 gears, and the Turbo Buicks had 3.42s. Posi was optional on all rears. If it's truly a G-body 8.5" rear, it should have two "fangs" on the lower part of the center section. Most likely, you found a 7 5/8" rear out of a Monte SS, which would have 3.73s in it. Again, the posi is optional, so make sure that it works before you pay for it. Good luck with the new G-body! __________________ Seeya, Steve R. in North Jersey '16 Go-Mango Dodge Charger R/T. It's so good to be back in a V8-powered, RWD car! Former Toy - '88 Monte SS - had lots of mods... Last edited by The Fixer; 01-27-2009 at 09:43 AM.