6V is 139 teeth and 12 volt is 168 teeth. If you are coverting to 12 volts you can use your 6 volt starter, or you can convert your six volt to 12 volts, any electrical shop can do it.
Or you can take your flywheel to a machine shop and they can swap out the ring gears. I had my flywheel ground and ring gear changed for 70.00 dollars.
1942 G5106 1.5-ton Chevy cargo dump Gallery pageOld Dominion Stovebolt Society T/Sgt. Gott (28 years of service with the USPP) 1940 Chevy G506 4112 cargo dump 1942 Diamond T G509 969A 4 ton wrecker 1942 Ward LaFrance G116 series 2 10 ton wrecker 1944 Ward LaFrance G116 series 5 10 ton wrecker 1931 Ford AA with a WEAVER crane 1944 Sterling HC 165 tractor 1944 Autocar U7144T w/ 10 ton trailer
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