360 magnum heads on Alcohol anyone try this ????

Are you getting enough fuel to it? I ran E85 briefly NA on a converted 750 carb and upgraded everything to deliver the additional 30% more fuel E85 required. I assume alcohol is even more. 1/2" feed and return, 255lph fuel pump, FI rated regulator.

Can you put a wideband O2 on it? That would take the guess work out of where your tune is in terms of too rich vs too lean when it pops.