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9" from a grand national

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Old 04-27-2006, 08:28 PM
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Default 9" from a grand national

Does anyone here know if a 9" from a grand national would fit in an f-body? What modifications would I have to do to the rear end??
Old 04-27-2006, 10:38 PM
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I believe that the grand national had a 8.5" rearend.
the 9" was a ford product.
And you'd need to make adjustments for overall lenght....torque arm...and im sure there is more.
Old 04-28-2006, 10:03 AM
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The Grand Nationals and GNX both had an 8.5" 10-bolt, but only the GNX had the torque arm setup. Good luck finding someone who is willing to part with it.

You would pay a pretty penny for it and then still have to modify it to fit. Probably still a better option to go with a Strange or Moser.
Old 04-28-2006, 11:26 AM
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The rear end is a 9" The guy took the stock rear end out and put in a 9".
Old 04-28-2006, 11:27 AM
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The rear end has 3:70 gears and the guy is gonna trade me heads up his 9" for my stock 7.5 10-bolt with 4:10s
Old 04-28-2006, 12:17 PM
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What is the WMS to WMS measurement? LCA locations are different aren't they?
Old 04-28-2006, 01:07 PM
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I don't know thats why I am asking if it will fit or not.
Old 04-29-2006, 03:50 PM
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Wont work at all without major mods.

You might as well just buy a junk 9" rear from the scrap yard and fabricate all of your brackets and mounts on it. Its gonna be tough to get the torque arm right.
Old 05-17-2006, 06:20 PM
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Yeah GN's came with 8.5 inch rears and the stock gear size is 3.42 Dont know what that guy has
Old 05-17-2006, 10:42 PM
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Wont work at all without major mods.





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