I hadn’t given much thought to a crossover issue as I have a single plane intake (Holley SD) and headers. I honestly thought a single plane did not have a crossover.
I have considered that I’ve had a fuel issue however. The truck lost 2-3 tenths last year - doesn’t nose over but it lost numbers everywhere. I sort of chalked it up to needing to freshen the engine up. I probably need to rig up a temporary fuel gauge taped to the window to get a read on what my cruise and WOT pressure is. Lower pressure = lower fuel boiling point.
You need to know what the fuel pressure is not assume.
you are correct that the crossover is not open through the intake but the passages in the heads if left open will heat the intake.
And Nitrous is 100% correct on the fuel pressure especially when running WOT at the track. leaning a motor out can have expensive consequences.
