Undersquare vs. Oversquare Engines

"Most guys take the stroke, the block, and the piston design they want, and simply use the longest rod that connects them." I think that's a line from one of Smokey Yunick's books and it fits. F1 has absolutely zero to do with any drag racing engine, and less with any street engine. They are far beyond anything we'd run, in size and rpm range and as such, the tiniest advantage needs to be exploited by them. Rod ratios for what we do mean very little, but for them can be 10s of horsepower or another 400rpm. (at 19,000+rpm I guess another few hundred would be a big deal...)

The program is Larry Meaux's Pipemax. It's a cool deal, originally written for designing headers. It assumes a lot for it's calculations for horsepower and torque, but for port dynamics and sizing it is very good. The down side is, nothing is plotted. It's just lines of data based on a single rpm so if you're not well rested, it can be hard to compile what you need...lol.