8.5 rear end for 1980 G body GM

Lyn Smith · 10-05-2013, 09:01 AM

What years 8.5 GM rearend will fit in a 1980 Buick Regal ( G body)?

Steve Williams · 10-05-2013, 09:06 AM

As a bolt in, 78-87. Regal T-Types, Grand National and Olds 442's had them.

Joe Toller · 10-05-2013, 09:12 AM

Don't forget Monte Carlo SS.

Rick Schilling · 10-05-2013, 09:12 AM

Finding one at a reasonable price is another matter.

Steve Williams · 10-05-2013, 09:30 AM

Quote:

Originally Posted by iraceitall

Don't forget Monte Carlo SS.

Monte SS was 7.5 with 3.73 gear

Chipper Chapman · 10-05-2013, 11:42 PM

77-96 b body are really close to direct bolt in other than width. upper arms need to be shortened and shock mount needs to be moved to rear of housing from front.

SSGN · 10-06-2013, 08:06 AM

Only the Buick Turbo Cars and Olds 442 came with the 8.5 inch. Monte SS and all others were 7.5. They are cheaper than a 12 bolt . I have seen non posi assembly's go for $500 or less. G80 is the posi code . Lyn go on here and look around, good bunch of guys

http://www.turbobuick.com/forums/

Kevin

Joe Toller · 10-06-2013, 02:03 PM

Quote:

Originally Posted by Chipper Chapman

77-96 b body are really close to direct bolt in other than width. upper arms need to be shortened and shock mount needs to be moved to rear of housing from front.

And, some b/c body are bolt-in axles. My 79 Lesabre came that way, shocked me!

Charlie A · 10-06-2013, 06:49 PM

Quote:

Originally Posted by Lyn Smith

What years 8.5 GM rearend will fit in a 1980 Buick Regal ( G body)?

Lots of good G-body info here: http://www.maliburacing.com/faq.html

Great site also. Malibu influenced but tons of G-body info.

been a member under another name there for years.

Tod Lane · 10-06-2013, 09:50 PM

Quote:

Originally Posted by iraceitall

And, some b/c body are bolt-in axles. My 79 Lesabre came that way, shocked me!

Some Buick, Olds, Pontiac BOP Be careful some have some different internals, bearings...

Just had one in the shop, had to piece together a bearing kit.

10-05-2013, 09:01 AM	#1
Lyn Smith VIP Member Join Date: Dec 2001 Location: Pontiac,il. Posts: 1,183 Likes: 267 Liked 935 Times in 185 Posts	8.5 rear end for 1980 G body GM What years 8.5 GM rearend will fit in a 1980 Buick Regal ( G body)?

10-05-2013, 09:06 AM	#2
Steve Williams Member Join Date: Aug 2007 Location: Detroit, Michigan Posts: 352 Likes: 0 Liked 1 Time in 1 Post	Re: 8.5 rear end for 1980 G body GM As a bolt in, 78-87. Regal T-Types, Grand National and Olds 442's had them.

10-05-2013, 09:12 AM	#3
Joe Toller Senior Member Join Date: Jan 2009 Location: Lewistown, Montana Posts: 550 Likes: 78 Liked 4 Times in 4 Posts	Re: 8.5 rear end for 1980 G body GM Don't forget Monte Carlo SS.

10-05-2013, 09:12 AM	#4
Rick Schilling Member Join Date: Feb 2009 Location: Indy Posts: 103 Likes: 18 Liked 14 Times in 10 Posts	Re: 8.5 rear end for 1980 G body GM Finding one at a reasonable price is another matter.

10-05-2013, 11:42 PM	#6
Chipper Chapman Member Join Date: Jan 2004 Location: Belmont N.S. Canada Posts: 473 Likes: 246 Liked 163 Times in 71 Posts	Re: 8.5 rear end for 1980 G body GM 77-96 b body are really close to direct bolt in other than width. upper arms need to be shortened and shock mount needs to be moved to rear of housing from front. __________________ Chris Chapman 1969 Chevelle NHRA F-G/SA 1090

10-06-2013, 08:06 AM	#7
SSGN Senior Member Join Date: Feb 2006 Posts: 644 Likes: 128 Liked 140 Times in 51 Posts	Re: 8.5 rear end for 1980 G body GM Only the Buick Turbo Cars and Olds 442 came with the 8.5 inch. Monte SS and all others were 7.5. They are cheaper than a 12 bolt . I have seen non posi assembly's go for $500 or less. G80 is the posi code . Lyn go on here and look around, good bunch of guys http://www.turbobuick.com/forums/ Kevin Last edited by SSGN; 10-06-2013 at 08:08 AM.