Minimum electric fuel pump pressure

If, after all of that worthwhile work is done and it still has hot start issues I'll suggest one of the plate type isolators. They're under-appreciated here and pretty much everywhere else, BUT my AFB couldn't have cared less about the spacer isolator that I tried first. Still had hard hot starting. In the summer I could smell the fuel!

The plate isolator works as a heat shield. In the case of the AFB's the fuel bowls are hanging off the side of the carb. RIGHT over any heat riser in the intake manifold. Put an aluminum plate between them and it will deflect most of the radiated heat trying to reach the fuel bowls. I made mine from a piece of 1/8" aluminum. It spanned rocker cover to rocker and was almost as long as the intake itself. I did cut various clearance holes in it.