got some freeway time on the motor. The blow off is extremely loud and it boost 10 psi quickly. 15psi and the gates opening up. Need to get the wide ban on it to see the fuel. I know its a lil rich on the part throttle it blubbers a bit but rolls on through it with ease. The carb was setup for the 350 that was in it running 6psi till i melted pistons.The creator hasnt had his ass dyno in it so gonna show him this week and we will see what it does.
While it scares me that you don't have a wideband on it and you're boosting on the motor, if she's so rich she runs rough part throttle you are probably jetted super rich and she's safe to raw dog on IF your ignition timing isn't way off. Pull some plugs, and look at the piston surface. The pistons should have a nice coat of soot/carbon on them if it's that rich, if you have tiny pinholes in that carbon/soot pattern that you can see shiny piston through then you have an issue with timing. If there's no carbon trail or soot (the piston doesn't have to be completely covered by carbon, I am just ASSuming yours will be from your description) and you see the shiny bits on the piston then you probably have a timing and fuel problem. Timing super retarded can make a rich mixture seem super lean, as far as reading the piston goes, and lead to those detonation marks.
OK, can I get a fucking vid of the truck now?