GM 1-Wire Alternator, 100 Amps, Black Powder Coated At CVF Racing our alternators are specifically designed to work with pulleys at low RPM so you can be certain that your alternator will charge throughout the RPM range. A lot of high amp alternators just by shift the RPM range higher to get more power at the expense of low end charging. (Kind of like a really big cam) Our alternators are tested in the USA and built with the highest quality components and guaranteed to get you home. We use high quality insulating materials to keep your alternator running at high amps. 1-Wire Alternator Wiring Instructions Advertised Output: 100 Amps Voltage: 12V DC Regulator: Internal Finish: Black Powder Coated Case: GM10SI Billet Pulley & Alternator Fan Not Included (May contain steel fan and pulley).