Re: 5 Main bearing Model A block
The Herc crank needs to be lengthened in the rear main area, some end for ended them and welded up a flange. Quite a project! George, you might want to think about RPM as flatheads aren't known to rev very high. A friend runs Bonneville, turned 150 in a lakester. He turns it 5500, that is as high as any flathead that I know of.
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