I think the v8 verses 6 deal is that more money was spent in the last 30 years on research & development on the v8 programs. I believe in today's world 1 to 1 1/2 hp. per cu. in. is realistic wheather is be a 6 or 8 Actually when a guy chooses to use say a 8.75 to 1 compression piston it does not nessecarily mean thats all the compression that motor will develop. The combustion chamber size and the Cam configuration still affect this. A short duration cam will make more compression, like wise the longer the cam duration the less compression the motor develops. As general rule long duration cams make more top end horse power but less bottom end torque.In short,the best combination would be high compression with a long duration cam = maximum performance and of course, Quallity fuel. Paul
