Used to run a 240CID (CompCam, stainless 1.94, 1.60 valves, dual ram intake, 42" exhaust primaries, 302 V8 forged pistons) in a Mustang oval dirt track stockcar on a 1/4 mile track. Because of its 3.18" stroke we would see 7200RPM going into number 1 and 3 turns. Never blew up! Smoothest running engine I ever built and what a unique sound coming down the straights. It did embarrass a lot of the V8 racers. Transforming a 240 into a racing engine? You're pretty much on your own. CompCams were a big help in cam selection, Ak Miller tech articles were valuable.The V8 guys get lots of advice - there's tons of information out there for them along with more tons of speed goodies. Why is the 240 Ford a good inline to run? 12-port head, short stroke, 4"bore, long rod 6.8". It will be interesting to see dyno results of the new aluminum head on the 240 as well as the 300!