8.5 GrandNational 10Bolt Identification

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PapaSmurf86

Not-quite-so-new-guy
Jan 26, 2012
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Hey everyone. I would like some of your input on what you think. I picked up this dif and I was interested if any of you could tell me some information on weather or not it was a GN 8.5 10bolt.

In this image you can see the 7.5 10Bolt cover. The 8.5 has a much more round pan then the 7.5pan. Some information ive seen to show its an 8.5 10bolt is the ears or lugs under the pan are more squared off rather than a fang looking ear. The pan measures 11" where as the 7.5 measures 10 9/16". The cast number on the center section is 14075742.


kolt402_zps1106e00c.jpg
 
It's an 8.5, but I couldn't tell ya for sure if it's from a G-Body or not. If the width matches your 7.5 then it should be.
 
definately looks like an 8.5 for a gbody. Now whether or not it is a 3:42 or a 3:73... not sure. Run the numbers on the axle tube or count the gears.
 
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