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#1
12-10-2020, 02:43 AM
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Buyer Beware.....this is an * Buick.
The Buick Gods have spoken. 10 bolt is correct. Dan
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69 300 Deluxe Post Sedan Frost Green 69 SS396 300 Deluxe Post Sedan Lemans Blue SOLD 70 Buick Skylark Post Sedan Gulfstream Blue 70 Buick Skylark Post Sedan Burnished Saddle http://m.youtube.com/watch?v=PM3DE8qI2NY https://m.youtube.com/watch?v=Yn4xEmGypUw Last edited by Postsedan; 12-10-2020 at 03:00 AM. 
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L78M22Rag (12-10-2020) | ||
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#2
12-10-2020, 03:47 AM
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As far as I know, Pontiac was the only other A body to borrow the Chevrolet 12 bolt in '70 for the 455 GTO.
So Dan, what is an asterisk Buick ???
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Mitch 1970 Chevelle SS 1966 Chevelle SS 1967 Camaro ss/rs 1938 Business coupe, street rod 2000 FXSTS, original owner, 13k miles
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#3
12-10-2020, 10:54 PM
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Quote:
With the C-clips, the small, non-hardened pinion spider gears and the tapered axles, the 12-bolt would have been no upgrade in a 510 lb-ft '70 Stage 1 over the quite stout Buick 10 bolt with hardened spider gears and 4-pinion posi. It was a very good rear, same with the Pontiac HD Safe-T-Track. Don't know if anybody crunched the numbers at GM back then on warranty claims on diff breakage but I, for one, wouldn't be surprised if the failure rate leaned more towards the Chevy side. Especially if considering 4-speed cars.
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I ain't nobody, dork. Last edited by Tracker1; 12-10-2020 at 10:58 PM.
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