Dude is this truck going to make it like JCCS 2025 or what,i have gone through 2 engine complete builds and waiting for a balancer to come from pollack vill and you still aint running yet.lol
We'll get a gauge so you can see what is going on.unless your running all the stock fuel,system like per say out of a 95 240,you will need to dial,it in.
Are you running a fuel pressure gauge first of all second what pump your running do you need a regulator or a return line to the tank,you can use one of the vents on top of the tank.
I don't doubt you one bit,but the problem started I am sure is when he cut the front pulley off and welded a crank trigger wheel on it,so it was more then likely out of balance and I am thinking the powder coating just sealed the deal.shit happens.
What you can do.