Head Porting Advice

fishy68 said

I did but only a very slight amount. The gasket size was real close as it was. Just did enough to blend them to the gaskets and headers. I took out any flashing and polished them then re-flowed them. Actually lost 3-4 cfm below .300 lift and only gained 10 cfm at .550 and 16 at .600 lift. IMO it wasn't worth the time and effort especially since my engine build is very mild. As CB said they flow really well when stock.

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Hey Fishy, how about the intake ports? I need some more advice before I call it finished and start assembling the heads. Here are some pictures, should I make the curved walls as straight as I can? My friend told me that I could take as much needed to make the curved walls straight as long as I don't go through it. My concern here is, where are these heads prone to cracks? Don't want to weaken them. He said the port runner walls don't get that hot and shouldn't worry about cracks there.