8.5 identification

Questions about all other brand differentials.
Clint Hester
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8.5 identification

Postby Clint Hester » Wed Apr 14, 2010 8:58 am

Ive got an 8.5 rearend under my 80 malibu. It was supposedly a G-body 8.5 out of a hurst olds but it has the 4-bolt backing flange on the tube ends. Possibly someone changed the flange im not sure. Is there any way to i.d. it using a casting number and where might that number be located? Thanks

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monzaz
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Re: 8.5 identification

Postby monzaz » Wed Apr 14, 2010 8:09 pm

Yes NOT likely it is a STOCK GN /442 hurst olds 8.5 rear IF you post a few pictures of the rear cover area, spring perch area, lower and upper control mounting area too.

The GN/442 10 bolt 8.5 will have a 2.5 " tube diameter same as the 7.5 10 bolt tube. ALL other 8.5 10 bolt rears have 3" tube diameter.

Casting numbers elude me at this time ...

Jim
J D Race

Clint Hester
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Re: 8.5 identification

Postby Clint Hester » Thu Apr 15, 2010 9:25 am

Ill get some posted the weekend thanks

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monzaz
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Re: 8.5 identification

Postby monzaz » Sun Apr 18, 2010 4:50 pm

Will be here. :) Jim
J D Race

Clint Hester
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Re: 8.5 identification

Postby Clint Hester » Thu Jul 01, 2010 6:20 pm

sorry for the delay
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Last edited by Clint Hester on Thu Jul 01, 2010 6:25 pm, edited 1 time in total.

Clint Hester
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Posts: 5
Joined: Thu Apr 16, 2009 7:06 pm

Re: 8.5 identification

Postby Clint Hester » Thu Jul 01, 2010 6:22 pm

it has 12mm studs also
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100_2250.jpg

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monzaz
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Re: 8.5 identification

Postby monzaz » Fri Jul 02, 2010 7:48 am

Looks almost stock I have to see close ups of the weld. Any way That is a STOCK GN /442 8.5 rear Just have to see if someone welded ends on it . Jim

Definitely 8.5 and definitely G-body

Need close ups of the flange area where the backing plates bolt on.
J D Race


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