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- Tue Jan 31, 2006 9:28 pm
- Forum: Electrical
- Topic: Optima Yellowtop + High Output Alternator Install
- Replies: 31
- Views: 3968
Alternator speed (RPM wise) is about 3x what your engine RPM is. For example, if the alternator's RPM speed reads 2000, that's around 650 engine RPM. So the alternator is producing good power at low RPMs. As you get higher in the overall amps of an alternator, it will produce less and less percentag...