Hi Mike: That's interesting. Pete Brock called his engine a low BMEP design, but=20 thinking back on the talk it may have been better named a low RPM design. I say that because one of the selling points was the HP needed to drive=20 the valve train on his engine was very low compared to that of a 5.0 L=20 Ford V8 which was around 40 HP. The reason for that was his valve=20 springs looked like they came from a ball point pen. --=20 Have Fun, Brooke Clarke http://www.PRC68.com --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .