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1972 BB 402 question

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05-11-2021, 01:49 PM	#1
Patch Senior Member Join Date: Jul 2002 Location: Oak Harbor, WA Posts: 703	1972 BB 402 question Hey there. Opened up a new to me 402 last night. No ridge at all in the cylinder walls. The pistons are what appeared to be factory pistons, but what's with the hole in each one? Some had a 9 stamp, some had a 10 stamp. Attached Images __________________ Patch

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