First the generator arrived in good condition, NEW, not refurbished and working. I was able to change the pulleys but decided to overhaul it for a while. Third, a power chart has also been included showing how much power is expected across the rev range. After some research I found that my alternator pulley gear ratio had changed from 2.38 to 2.75. And it seems to be within Ford alternator tolerances, so I'll speed it up. I don't race and I can afford to put extra power into my radio amps. I've also found that a few stang sites recommend this practice for people with big amps. If I had an 8 cylinder engine I would go the other way, the standard 6 cylinder engine would rip apart at 4500 rpm and keep the revs well below 12,000. The generator block seems to have an operating range of 1600- 16000 rpm to have shaft. I can tell you more about how it holds up next year. I
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