The upper H.P. limit on the built I6 engines is far from 300 H.P. Leo Santucci has a 292 cu. in I6 that makes in excess of 700 H.P. That's turbocharged, runs the 1/4 mile in less than 10 seconds. My basically stock 292 with 3 Webers and a cam is over 300 H.P. and very streetable. Main problem about the I6 is cost, you can build a V-thing for less money and makes more H.P., but everyone is impressed with a strong running I6, and the sound of a good hot I6 is fantastic.
