Get a GM " 1 wire " alt. They excite at about 2500 RPM's but once excited, they keep charging as long as there running. You can wire a 3 wire into a 1 wire ( same thing actually ), and you could go to the parts store and get 1 for a 1975 Chevy ( pick a model )
Alternator on a GT?
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This is a GM alternator on a 112 JD i used to own. It was the only source of electrical power on the tractor. Worked perfectly the 4 years I owned the tractor and best of all was free. My friend had it sitting in his garage. Roger
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Check out suburban12's threads. He has an alternator on his 12 HP sears. He helped me wire up mine on my 16 since I use a winch also. I think my battery is down though cause it still can't keep the battery charged. I used a 3 wire and hooked up a switched positive to excite the alternator to charge. I think suburban12 was able to use existing holes in block to bolt it on, my muffler on my 16 prevented it so I had to cut/weld up new brackets.
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