Check you ground cables and maybe take a ground right to the case of the starter where it bolts to the back of the block. Another to help cool the fuel, make yourself a cool can, get some 3/8" stainless steel tubing, and a tubing bender, make a coil with the tubing and bring the ends together, connect your fuel lines in and out to the carb and submerge the coil into a #10 can with ice water.