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Old 01-15-2008, 05:12 PM
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Cylinder Bore Size

I am building a 377 from a 76 SBC and today i measured the bores with an inside bore micrometer. I honed the bores last week and cleaned them all up real nice and then crosshatched them. When I measured the bores, they are still STD and they seem to be perfectly straight. I did not get any size fluctuations and the micrometer stayed tight in the bore and didnt snag as I went up and down each cylinder. So if these measurements are all right, am i good to just get a STD size kit? Just wondering what your guys opinions are.

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Old 01-15-2008, 05:30 PM
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If theres no ring ridge at the top of the bore ive done what you did with no probs but this has been for a work car.

In your case if your building some grunt and are using moly rings id take the block to a respected machinist for his evaluation.

If your buying forged pistons, most of these are made to order now for any bore size.
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