Is there any easy way to tell which ring gear it has? I’m guessing just start baring it over and counting teeth? 168 teeth = 12 volt. The 6V ring has 139. I've been running my GMC 228 six volt starter on 12 volts for 40,000 miles with no bad effects. I'm careful not to leave it engaged long. It spins the engine over real fast!
Last edited by Bill Hanlon; 11/21/2022 5:16 AM.
'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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