'70 440 from a Chrysler wagon. 36,000 miles. took it apart, ball honed, ( no ridge) new bearings and rings, put it back together. took the heads apart, had them milled, just to make sure they were true. no porting per say, but did clean up the casting flash. lunati bracket master cam, torker 2 intake 850 double pumper. block huggers, and 3 inch exhaust, with ultraflows( were called race magnums then) 4.56 gears. 12.21@112 in a 3,900lb '58 Plymouth. This was 1998, my buddy that put it together was 18.