Super Six vs. Hyper Pak

/6 Matt said

There is no amount to mill off the head. Tell the machine shop to cc the head and shoot for as high of a compression ratio as you can run on 87 octane fuel with whatever cam you use. Also its better to mill the block vs. The head so that you can retain some possibility of quench.

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I get the impression, this is sort of a budget build. If so milling the deck is not the way to go. As for quench, it is very difficult to achive in a slant six, for the reasons stated by 805moparkid.To get quence in a slant six, requires custom pistons. I would suggest milling the head to achive about 9 to one compression ratio (measurements required). I have a 170 at 9.5 and the mildest mopar performance cam (just a little more then stock), it needs 93 octane. If you are doing a complete engine build, you can do the deck, but it would not be cost effective on a "budget" hop up.

Pocket porting refers to blending the area in the "bowl" under the valve. No need to go crazy here, for your type of build. Just smooth the sharp edges