Picture of 340/360 head porting....Mistakes?

skrews said

Always wanted to try 50 or 55 degree seats in those particular heads. As for the chamber being a power loser, I'd love to do some A-B testing on the dyno to verify that. I milled those heads .110 to achieve that form, the chambers measure 54cc so keeping that test apples to apples would be difficult to say the least.

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I think it would kinda be apples to apples. Shave to get compression(and a bigger quench surface) but lost in some cfm.
Original open chamber set up with potential better pressure recovery but less compression.
Basically the question would be, does making compression made that way, a plus or a neg, in power.
More compression and quench may win out.............or maybe not. sure would be a cool test!