Thread: Piston Identification 3994029 269-99 Big Block ?
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Old 12-19-2024, 07:30 PM
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daveg daveg is offline
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Bore size will tell you if 396, 402 or 427-454.
What is the bore size??

Pin placement will tell you if 427 or 454.

396 + .030= 402.

JAWAG but the lack of .030 on piston hints at 402.
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