Well, I have not built anywhere near 100 engines....only a few big blocks and several small blocks...all chevy. Let me first say that I havn't read much on the 4/7 cam swap, so I wont even comment on what I dont know about for certain. I will, however, read up on it now, then I will be informed! So, I still dont get what you're trying to say about cranks....are you supporting steel cranks, or cast cranks? The harmonics argument is worthless , we all know there are harmonics, but there has never been any definitive PROOF that any damage was caused solely by harmonics. The "gear drives cause cam wear" has been around for as long as gear drives have...has anything ever been proven beyond a doubt to be caused by gear drive?? No, never. I dont use them either, but Im not worried about harmonics, I just dont like the sound of them.

I also read your post on oil clearances, and Im sorry, but it makes no sense whatsoever...I dont know what you're trying to get across to us. I expected to see some bearing clearances mentioned so I can compare, but you dont mention any at all.

Pat, please read my original post again. I never said you gave bad info, and Im not saying you should keep it to yourself. Believe me, I have learned many lessons the hard way. And even though I may disagree with much of what you are saying, I most strongly disagree with your last statement, "good engine builders dont tell you everything"............Wrong, a good engine builder WILL tell you everything. I guess we can just agree to disagree!