Dies when stopping

[Gibbie1233]

I have a 1980 D50. I recently swapped the 2.6L g54b motor into it. It has a weber carb, electric fuel pump, balance shaft delete, and jet valve delete. Aside from that, the it is stock.

It ran for several months after the swap, but now dies whenever I slow down. It does not matter if I am in gear or neutral, it will die anyways.

I've also replaced the choke, and when it is engaged, it does not want to die as much. It runs perfectly fine otherwise. Giving it a little gas while braking keeps it alive. I've redone spark plugs and wires, redone the entire fuel system, and swapped out the brake booster but I cannot seem to fix the problem. Any advice?

[camoit]

How many PSI is the pump putting out? 3PSI.
After that look at the float level.
If the bowl is toward the front of the truck it will need to come up 1/8".
When the fuel sloshes forward it starves the carb. If the float is on the back side of the carb it goes rich when sloshing forward.