I can't agree more! I have ported a few heads. Mostly in the late 70s. Porting is just about 100% common sense. I think of myself as air when I port (sounds corny), but it helps me visualize what will help. I try to focus on the throat, bowl area, raising the roof when possible, and only smoothing the short turn radius. I also try to max out the width at the pushrod hump without grinding thru of course. The ported '70 351w heads have exceeded my expectations on my 331. My rebuild was completed early this year and the seat of the pants feel is excellent. I expect my RWHP to have gone from 335@6400 to 360+ with the same cam, a 282S. The most satisfying part of it is that the engine revs very well and pulls like crazy to 6800+ even with a cam whose advertised rpm range is 2000 - 6000 rpm. The fact that the engine produces power into the very high 6000s tells me that the heads are doing their job. Throttle response is "right now"! My heads ended up measuring 160cc on the intake and 60cc on the exhaust. Everything is port matched including my header openings.

I'd like to also say to pay attention to valve unshrouding and chamber matching the chamber walls to the cylinder. Usually, and especially if the block has been bored out, the chamber edges extend into the cylinder and need to be moved outward as much as 1/16".

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Tracy Blackford: Anaheim Hills, Ca
'65 FB Mustang 331, 282S cam, ported 351W heads. T5z, 3.50 posi.
new rebuild...single plane, more head work, 360 RWHP goal.