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tubman · 01-16-2021, 10:44 PM

To be clear, there have been a couple of errors in calculating total displacement in this thread. The engine the O/P is describing (3 3/16"+.030" bore with a 4" stroke) is 260 ci, not 266 ci. The classic hot rod "3/8 X 3/8" flathead (3 3/8" bore and a 4 1/8" stroke) is 296 ci, not 286 ci.

01-16-2021, 10:44 PM	#17
tubman Senior Member Join Date: Dec 2013 Location: Minnesota, Florida Keys Posts: 10,320	Re: 266 versus 276 CI? To be clear, there have been a couple of errors in calculating total displacement in this thread. The engine the O/P is describing (3 3/16"+.030" bore with a 4" stroke) is 260 ci, not 266 ci. The classic hot rod "3/8 X 3/8" flathead (3 3/8" bore and a 4 1/8" stroke) is 296 ci, not 286 ci.