CNC-Dude:
(Gary...Not trying to hijack your thread, but this sort of goes along)
Okay, I have a half and half. An F-head. Intakes in the head and exhaust in the block, as you know. Given it's stock 7-1 compression ratio I want to raise it. When the rebuild starts on the spare block I don't want to shoot myself in the foot. So... Custom pistons from Ross, or just deck the block and the head and take what I can get there? In other words..how does the transition area come into play with mine, compared to the flatty?
Also, I have been working on port matching the exhaust ports to the headers, and generally cleaning them up. How about the area where the valve guide is in the port? Can I reduce the height of that area?...the top of the guide itself to open up the area available?
Thanks:
Paul...aka xerxes
