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more numbers help please

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12-16-2008, 11:12 PM

jeff morocco jeff morocco is offline

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Re: more numbers help please

here is the casting number

3935439..........date 6 14 68

but i still cant find anything on the BY suffix....possibly a marine block because it did have a 2 gear geardrive in it which would make the cam spin backwards for more torque in a boat ?? make sense to anyone ???

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