I added a shunt as Jerry recommended. It reads a bit lower then before, but does work. In retrospect, I would make the shunt a bit thinner in the mid section so it reads truer. Here is what it looks like now.
Phil Moderator, The Engine Shop, Interiors and Project Journals
1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes Project Journals Stovebolt Gallery Forum