The Delco 3 wire I just got from NAPA yesterday starts charging at about 600 rpm. That's not bad at all. I agree on the amp gauge. When I have time I plan on doing the conversion using the Tech Tip here. I put the fusible link on my test engine so it didn't go to waste. Now that I understand Alternator operation better, I can safely work on electrical upgrades without doing any damage. Thanks again!
