Hot off the presses. All I can do is show pictures, I trust Nick is doing the right things. I did provide him with pictures of a sectioned head and he did mention before he started about sonic checking the thickness of the port walls. I told him if he wanted to do any fancy tricks like angle milling, etc, I was okay with it, especially since he has the intake too. I'm looking forward to seeing if he doesn't anything different with the chamber shape than I did (other than higher quality work).

Before any work is done on the valve side of the intake port.
https://scontent-sjc2-1.xx.fbcdn.net/v/t...amp;oe=5A8C9D4C

A rough cut.
https://scontent-sjc2-1.xx.fbcdn.net/v/t...amp;oe=5A9CF113

A very cleaned up port compared to a rough cut port.
https://scontent-sjc2-1.xx.fbcdn.net/v/t...amp;oe=5AAC0DCD

A closer picture of the intake port.
https://scontent-sjc2-1.xx.fbcdn.net/v/t...amp;oe=5AA5F10A
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Rebuilding an OHC Pontiac 250 with EFI and a Turbo