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Mike Pearson · 02-20-2020, 10:11 PM

It just has to meet the published port volume in Cc’s for the head number that you are running. Both intake, exhaust and combustion chamber. If they are big after poring then you fill back in with weld or epoxy to get back to the correct port volume

02-20-2020, 10:11 PM	#2
Mike Pearson VIP Member Join Date: Mar 2007 Posts: 2,321 Likes: 546 Liked 1,629 Times in 502 Posts	Re: SS Head Porting Rules ? It just has to meet the published port volume in Cc’s for the head number that you are running. Both intake, exhaust and combustion chamber. If they are big after poring then you fill back in with weld or epoxy to get back to the correct port volume __________________ Mike Pearson 2485 SS