Well Ive been trying to figure out what was wrong with the recent engine build I did, with an all new bottom end bored .40 over to a 308 and a Trickflow H/C/I combo up top. It was running 262rwhp and 296rwtq at its best with the Bosch spwrk plugs. So I changed to some good ol cheap autolites and it pumped it up to 274rwhp and 310rwtq. I know some of you are thinking thats kind of low, but you have to know I am running that robbing clutch fan still. I figure once I put an electric fan and some underdrive pullies it should be arounf 290rwhp and 320rwtq. Oh and it just runs so much smoother now also.