Quote:
Originally Posted by tub1
Ol Ron please share the details how dose one get a flathead to 258 I'm very nterested in the combination of parts you need to assemble this motor
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That's a 3 5/16" bore with a standard 3 3/4" stroke. In other words 3.3125" bore X 3.75" stroke.
You take a Ford block and bore .125" over and viola! 258.5 cubic inches.