LS2 starving for fuel????????

[kochevy67]

I have a situation with my LS2 that I installed in my 67 Chevelle. When I drive the car for an hour or so and it is warm out the car wants to die at idle if it sits for a few seconds. The temperature outside was in the low 80's and the motor temp was around 195-200. It seems to be starving for fuel but it smells like it is running rich. The fuel pump has good pressure (Rick's Tank), I cracked open the gas cap for good measure in case it was vapor locked but it didn't help and the motor has a stock tune in it. The weird thing is after it sits for a minute or so it starts back up and runs fine as long as you are in the throttle. The problem is at idle only. This is just a driver not a race car. Any ideas?