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Old 02-01-2006, 12:13 AM
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defln67 defln67 is offline
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Can someone help me out with my rearend
Does anyone know the gear ratio for a 1986 buick regal w/ a 5.0 307? I think its a 7.5" 10 bolt (dunno ratio) and i want to change the ring and pinion to a 3.73. Anyone know?
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Old 02-02-2006, 12:55 AM
Rare4thgens Rare4thgens is offline
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I know that they used 2.73's, 3.02's and 3.23's those years in Chevys and in your case I will guess it is a 2.73 if it isn't posi. If it i s Posi I will say a 3.02. You can always count the teeth.
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Old 02-02-2006, 03:00 AM
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Auto or manual? im guessing auto...

haha hes right you could always count them... # of ring teeth/ # of pinion teeth
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Old 02-02-2006, 04:31 PM
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auto 3 speed
auto 3 speed
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Old 02-03-2006, 10:22 PM
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i got under it, its 10.5" 10 bolt. . . thats not stock is it? if it was stock wouldnt it be a 7.5" or a 8.5"(grand national)
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Old 02-04-2006, 01:11 AM
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Quote:
Originally Posted by defln67
i got under it, its 10.5" 10 bolt. . . thats not stock is it? if it was stock wouldnt it be a 7.5" or a 8.5"(grand national)

10.5"????

How did you determine this...

sounds to me like you didnt measure the pitch diameter of the ring gear...
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Old 02-04-2006, 04:01 PM
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ya gotta take the cover off to find the size lol
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Old 02-06-2006, 04:52 PM
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my bad, ill take it off tomorrow, my first time dealing w/ a rear end. . . my bad lol
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Old 02-06-2006, 06:31 PM
WishIHadACamaro WishIHadACamaro is offline
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my bad, ill take it off tomorrow, my first time dealing w/ a rear end. . . my bad lol

wish you much luck, should be quite the learning experience.
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Old 02-06-2006, 06:34 PM
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Quote:
Originally Posted by DanO

sounds to me like you didnt measure the pitch diameter of the ring gear...


yup danoh has it exactly correctly
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