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Old 10-14-2003, 05:27 PM
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Info on 68' pontiac firebird 10-bolt rearend

Ok, I have a 1970 nova with the original 10-bolt and 3.08's mated up to a TH350. I was looking for a 12bolt that would bolt right in to my nova, and my step dad found this 10bolt in a wrecking yard on a 68 firebird. He said that he had always heard that they were stronger than the chevy 10-bolts, and that for $120 i should just rebuild it and use it. Has anyone heard this, or are they the same 10-bolt in my nova? I currently do not have the numbers off of it, so I don't know if it's a posi or what ratio it has, but I plan on buying new equipment anyways. Can anyone confirm or negate this?

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Old 10-14-2003, 09:06 PM
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they are the same rear as the Camaro-Nova
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Old 10-15-2003, 10:37 PM
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The 8.2 Pontiac ten bolt is not the same as the ten bolt in your Nova. The Pontiac rear has bolt in axles whereas your Nova use C-clips to hold the axles in place. The gears are not interchangable. Go with the 12 bolt rearend, alot stronger and lighter and more avalible gear ratios.
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Old 10-16-2003, 11:51 PM
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Good luck finding a nova 12 bolt and better alternative is going to the junk yard and finding a 73 and later nova witha 8.5"10 bolt it is a direct swap and is almost as Strong as a 12 bolt and much much cheaper. Alot of guys run big-blocks behind these things and they stand up. You probably we have to convert to multi-leafs if you are still running mono but thats about it.
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Old 10-17-2003, 04:51 PM
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My car allready has multi leafs. My buddy who's 73/74 (can't remember) got totaled (it's in my album) has a 10 bolt and he said I could whatever parts I need, maybe it's an 8.5. I really do want to find a 12 bolt, they all seem to be in the $800-$1000 range though. Thanx though, you guys helped me decide to pass on the firebird rear.
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Old 10-17-2003, 07:38 PM
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Why do you want a 12 bolt so bad?
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Old 10-17-2003, 09:30 PM
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because I now have a brand new car as a daily driver and am considering building a full blown engine for the nova. It'll probably be another year for the build, but I like to buy parts once. I don't want to build a 600hp engine with a powertrain that is going to blow apart. Basically the nova is just a toy now and I want a rear end that will hold up to what ever I decide to put through it. I considered a Ford 9in. but would rather leave it GM, and I also read that the chevy 12 bolt has less power loss then a 9in.
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