J head porting

Rat Bastid said

I know what I’d do and that’s start with a valve job. How do you know how big the throat will end up without establishing the valve job?

Learning to port on the interweb is no different than learning to port reading car magazines.

If you have access to a flow bench us it. The FIRST thing you’ll learn is most everything you read in magazines and forums like this WRONG.

Right now you are just guessing.

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This would be about the 10th mopar head I have ported, bb and SB, Harley Davidson head, jap bike heads, some flathead old school mini bike stuff!! Why would I need to cut the bigger seat right now when I’m working on the guide? I will probably do one port and have it flowed to see if it’s going to be good. After 40 years of hot rodding everything I own I think I have a good handle on things. I have a pretty good reputation on this site for giving sound advice and sharing my builds and mods. And a quick small block Demon. But I will take your advice along with others because I know I don’t know it all and am always learning.