[Mils]

I have a 427FE S/O, medium riser. I have 2 4bbl holley 4160's (450cfm each) that were recently rebuilt. I've been struggling with tuning these things.

Whats happening is after running it for a bit and getting the engine all warm, it will stall out during a hard (or even medium) stop. I have to pump the gas again to get it started and a bit of black smoke comes out.

These Holleys have a primary bowl (rear) and secondary bowl (front) on each carb. I've adjusted the primary bowls on each carb to make sure its not starving during a stop. I've never touched the secondary bowls on either and wondering if i need to set the bowl level on those also?

Any help appreciated, i'm a novice and looking for help. TIA