Alright then if a 302 block stroked to a 331 or a 347 wont be strong enough to handle 12-18psi from my procharger then what does anyone say to a 302 stroked MEXICAN block handling that amount of pressure. Im just looking for 500-600hp if possible without going to a 351 and keeping a charger on it. Please give me all your ideas and opinons on this matter.