Cmefly you called it haha it is a fordstrokers set up! Nice thanks!
Barnett forgive me I was just a weee bit confused with the 421.629 is that a range you figure it may be between?? Thanks!
LOL, yeah, ok, sorry , as cmefly mentioned, I was just messin with ya. the 629 after 421 represents just part of one horsepower, lol. Unfortunately, cmefly is just one of the few that even partially understand me or my "attempts" at humor. I'm not sure if that makes him sart or just odd, but you can always have faith in his posts and knowledge.
Without knowing it was a pre fabbed build, the 421 hp really was an actual but conservative guess on a "tough" dyno.
Lots of things affect hp such as compression, timing, quality of hydraulic lifter internals, exhaust and valve train etc.. Lite weight valves, springs, retainers will rev farther than a heavier valve train and a nice, lite weight crankshaft made from prefabulated amulite using sperving bearings will rev quicker...ok, i'll stop now.
cmefly, supershifter2 sent you a post.