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Old 01-25-2015, 01:29 PM   #6
oldskool
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Default Re: Ol' Fart's Firebird Fantasy

Thanks !

Now I need to ask a rear end question. Does anybody know if these '77 Cats and Bonnies had the 8.5" rear ?

I know the '71-'81 Birds and I think the '71-'74 Ventura had the 8.5. I have one in my '74 Vent bracket car, and it seems plenty strong for a low 12 or high 11 sec car. But I've read that some of the lower powered Vents from the later '70's had the smaller 7.5 rear. Just don't know about the Cats and Bonnies.

I've read that these big tens are almost as strong as a 12 bolt and will do just fine at this level of racing. I've never broken a stock axle. But I reckin NHRA requires aftermarket axles and / or C-clip eliminators. Is this correct ?
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