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View Poll Results: Whats your favorite bore size using a 4 inch merc crankshaft
stock just hone 1 1.61%
255-3.188 5 8.06%
276-3.313 44 70.97%
286-3.375 7 11.29%
other 5 8.06%
Multiple Choice Poll. Voters: 62. You may not vote on this poll

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Old 04-08-2025, 06:06 PM   #41
kirkf
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Default Re: Flathead Bore Size ?

Reading these old threads is like paging through an obituary. A lot of great people put in their .02 back in the day.
That being said, I would guess most builds go 0.125 over. Thats what mine is.

Kirk
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