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Discussion Starter · #1 ·
Sup men??? I'm in the process of installing a second heavy duty alternator on a 3.7L 250 Transit. The issue is that I need to order a custom crank pulley kit and need to optimize the pulley ratio to avoid overheating and to get enough output at idle. To do this, Bruce over at OceanPlanetEnergy (great people, btw) needs to know the diameter of the existing crank pulley, and the dealership is being really slow to respond. Would anyone know the answer by chance??

Thanks in advance!
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