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427sharpe;
I am a NASCAR fan and go to a number of races every year. The rule in Winston Cup is max. 12.0 to 1 compression and you better beleive they are all right on it. Also, they run LEADED 105 octane Union 76 racing gas in those motors. They are only run for one race and then are tore down and rebuilt so they never see much carbon or other buildup in their motors...
I just do not see running more than 10 to 1 on pump gas and having a motor live...not saying it can't be done, just haven't seen it around here...but I have seen quite a few pistons with holes in them and lands missing on the sides.
I do think the NASCAR boys get the most out of the engines they build. I have seen a few USED Bush and Cup engines around here in race cars and was actually suprised at how simple the and straight forward the motors are...
David
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DAVID GAGNARD
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