Since the number eight hole in CMC17's block is fubared I am doing a complete swap over to CMC2. Rebuilt short block, E303 cam and shorty headers. I had a few questions and wonder if anyone here has ideas about those questions. First my machine shop guy that is doing the heads ask about angle milling. Todd does not think that angle milling is within the intent of CMC rules (so I'm not going to do it) but I wonder about how much it would help. The problem with angle milling is you have to modify the coolant holes and head bolt holes so that everything lines up. I was told it would make more power than regular flat milling but from what I read just the cam and headers on a well built short block should make CMC2 power without a problem. The GT40 heads have large combustion chambers and lowers your compression ratio if not milled. The GT40P heads have a smaller chamber but they bring along other issues I don't want to deal with. My plan is to take the GT40's down to the same chamber size as the GT40p's (59 to 61 cc's).
My other question is cam timing. I read where you can change where the engine makes power according to cam timing. If you want to make power at a lower RPM you advance the cam timing and if you want to make power at a higher RPM you retard the cam timing. I have never done anything but line up the dots on the gears and wonder if screwing with this is worth the effort and if it's even legal? I tried to call Tony a few days ago but he has not called me back.
I'm not going to do the angle milling since the guy wants $300.00 to do it and I agree with Todd that it is not within the intent of the rules of CMC but the cam timing I would like to know more about?
JJ
Bookmarks