All this talk has me wondering how my combo would do. The heads are CNC 325 440-1 that flow 370 intake at .700 and the ex flow at each lift is pretty much constant at 83%. 4.500 bore, 4.25 stroke, 7.1 rods, 13.9 CR. Indy R2 cam. How does the rod length affect the power curve? I chose the longer rod for the reduced side load on the cyl walls.