i have a 350 with 416 heads. I have a holley street dominator intake, comp 270 h-10 cam, and a holley mechanical fuel pump. I'm having trouble with the engine running rough when it's warmed up and stalling when I stop. I figure I'm having trouble with vapor lock I have an exhaust leak right by the fuel lines along the firewall. I was also wandering if anyone was having trouble with vapor lock through the carb. my intake gaskets had the heat riser ports for under the carb, but it also had reducers. I used the reducers on both sides.

 

What carb?

Is the float level set correctly?

Does the carb percolate after the engine is shut off?

If you have a transparent fuel filter, you can see if fuel is being pumped or not. That may help diagnose the potential vapor lock problem.

 

it's an edelbrock 1405. I have a clear filter, but when it's idleing it's almost empty. I don't know how it runs. When I first start it up it fills up