The thing I've seen the most when going naturally aspirated is no matter what block size is chosen, the temptation to stroke and poke it to maximum capacity is too great! People just tend to go to the ceiling with whatever their combo is because it usually dosn't cost that much more to do so. Then they wring it out and it makes any engine a grenade waiting for it's pin to be pulled. Maybe that's just the people I've known, but I've found that mentality to be quite widespread.
Michael
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