Join Date: May 2012
Location: Québec, Qc, Canada
Normal voltage at full current draw from alternator
I swapped my old 10SI alternator for a CS-130 105 amp and installed the smallest pulley (2 3/8'' OD) that I found. At 80% current draw, I was drawing 83 amp when I made the measurement (heater fan, headlights, high beams, electric fan, etc) and at idle I was right on the 13.0 volt. I figured a 105 amp alternator could hold at least a good 14.0 volt until it got to max output. Is this situation normal?
1968 Chevelle 396 (bored 402) / 4-spd T-10 / 3.73