To Stroke, or not to Stroke
I am figuring out that the big big difference is in the amount of rotating wieght and thats using 440 parts, it's alot more drastic with the aftermarket kits. I think because of deck hieght being lower, you able to run alot lighter smaller piston (1930 grs.lighter ea) plus a more stiffer block because everything (including valve train)is shorter tougher built for big torgue and able to withstand alot of HP increase. Rotating assembly when completed is just short of 8 pounds lighter than either the 400 or the 440. The standard bore is bigger stock than the 440 so you are already starting out with more displacement when stroking and you can get bigger pistons in there without having to over bore so they run cooler and last longer under big hp. So you end up with an engine that has more displacement than a 440, revs faster with more torgue and runs twice as long. Just some observations I have gathered thanks to FABO.