Seems like adding fuel is the answer. The factory settings went out the window when you dropped a 318 carb onto a mildly chooched up slanty. So, adding or removing fuel is one step. Raising the metering rods would be first. Typically factory set,but if they have been moved, then its a crapshoot. A reference point/mark so you can go back if needed. Its been 20 years since i had one apart.
Thick carb mounting gasket? I forgot one once, didnt run very well.
