I built one 4.5" sroke 440 a few years back for a egular street car. t had homeportd RPM heads, team G intake and a Scotto Brown specced mech roller cam. Worked great and made hue torque, the stock suspension 3600+ lbs car with 3.23 gears, powerglide and 275 M/T ET radial streets run 10.4 in the 1/4. For making power at highter rpm levels bigger port heads are a must!