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Ol' Ron · 07-29-2010, 02:23 PM

One modification you can make to a cylinder head is to increase the angle of the transfer area into the cylinder. I cut this back with a ball end mill. However it lowers compression and I don't think it helps a street engine.

07-29-2010, 02:23 PM	#62
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,859	Re: Boring a flathead One modification you can make to a cylinder head is to increase the angle of the transfer area into the cylinder. I cut this back with a ball end mill. However it lowers compression and I don't think it helps a street engine.