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Old 02-19-2020, 02:34 PM   #8
Flathead
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Join Date: May 2010
Location: Southern Maine
Posts: 1,493
Default Re: Centre exhaust port baffle or fourth port?

I think the majority of power is found on the intake side. Some flow bench testing would be helpful to see how your intake and exhaust match up. I ran a dragster with a similar sized motor and the 425 eliminator, three exhaust ports, made power to at least 7000 rpm. I did a lot of port and head work. John Bradley ran multiple exhaust ports with great success back in the day. Opinions will likely be all over the place on this. Disclaimer: I do not compare myself to the legendary Mr Bradley.
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