Ok guys,
here is what I got going on. 235cui (1957 3200) dual carbs. HEI-MINI elec ingition from Tom Langdon. Starts up fine, runs very well. Gets hot, and my ignition starts breaking down. Spark gets weak, and eventually stalls out when engine is reved. HEI is 2 months old. Toggle switch from dash with #10 wire as recommended by Langdon Stovebolt. Coil test shows that the coil is 100%. Timing light shows perfect timing. ohwell JOHN in VA