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Thread: help choosing rear end gears.
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Old 02-08-2013, 04:31 PM
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Most trucks run taller tires than cars, so I would probably go with the 3.73. The overdrive transmission will work well with that.

The '77 should have a truck 12 bolt, not the 10 bolt. If you have the 10 bolt then it must have been swapped at some time.
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