on the dynosims dont thrust the numbers,but spot the trends,these programs are usefull to figure out what changes are worth doing and wich are not,they can be accurate but those that are close realy demands perfect input on everything. my blown 340 should according to camquest make 700hp at 6000 something rpm and over 600Lbs of torque at a very low rpm that tells me something about how far out it is.knowing that a friends blown 383made 600hp at a real dyno with much better basic components
and i agree with Adam and im not either trying to put your combo down 425hp is a ton of power on the street!
