I've been trying to get this bog out for a few years. I've done everything to the Holley Dom that can be done short of reworking the internal fuel curve. I replaced it with a QFX carb and it helped some but it's still there. So I'm now looking outside the carb. This motor is a 468 with 12.5 comp, Brodix BB2 non cnc heads, super vic intake. The cam is a Comp 11-736-9. In dur. 286, Ex dur. 294 @.050, lift In .775 Ex .748, LSA 110, istalled on 108 ISL. This is in a Kurtis hydro. At 1500 rpm idle, it pulls 5in vacuum and at 3000 it pulls 10. As I roll the throttle from idle, it seems to run rough to 3000 rpm then starts to smooth out. I thought it might have been the 6al box and the multiple spark causing it. So, I installed a new digital 6al and it runs the same on the trailer. Haven't tried the new box on the water. I was told it could be that I'm geared to high, but I don't think so. I have 37 in the v-drive and a 31 split in the trans. Anyone have any ideas or suggestions as to what to try. Can't win races when you see your copetitor leaving you at the line. Once it goes, it runs fine.