Off-the-shelf parts are more readily available than ever. Custom cam profiles, crazy domed pistons, and what were once consideredwild rocker-arm ratios are now the norm in modern-day engine building.

Last time we had Project 505 on the dyno was for the September 2007 issue of Mopar Muscle when we were testing the new Holley Ultra HP carbs. During that test session, we saw 738 horsepower from the ...