Using the D1110-A ballast resistor rated at 1.8 ohms would bring the current through the points down to just under 4 amps. I'd still worry about life expectancy of the points. And the math just doesn't work out. Points closed, the voltage at coil + will be around 6.75.
The Mallory coil is meant for an engine capable of much more RPM and a couple more cylinders than your 235 has. Loose the chrome coil, gain reliability.
Last edited by Bill Hanlon; 04/25/2026 1:36 PM.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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