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Canadian Poncho Homepage -> Canadian Poncho -> The Lounge -> 12 bolt rear cover with or with out notch?
Post Info TOPIC: 12 bolt rear cover with or with out notch?
65 SD L79


Canadian Poncho Superstar!

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12 bolt rear cover with or with out notch?
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as title says, what is the different applications for?



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4SPEED427


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No notch is the Chev style diff. Always used in Chevy, some BOP A bodies used it for certain applications. It has the upside down V stamped into it from the inside. All the other 12 bolts are BOP I believe.

Unless I'm wrong....

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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68sd396rag


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Ya the smooth cover was Olds-I used to see them in scrapyards-they are easy to spot.At least that was my experience anyway-don't ever recall seeing a smooth 12 bolt in any Buick-even the 70 455 cars had 10 bolts-unless maybe Canadian made cars.

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