just got new h/o alt installed but voltage drop??

[Qbenjamin 10+ year member]

where would u buy a pulley that would fit on an EA alt n are they easy to put on? My EA Voltage rarely goes above 13.6 and goes as low as 12.4 while driving. This is with only a single 400 watt 2 channel amp installed

Your alt suks then. I had the same problem with my HO alt. I put the stock alt back in, re-tightened all my connections, and I couldn't be happier. Also, I noticed that my cap was extremely off (By about .8v) but I didn't knw that it had an input gain on it. I turned the input gain accordingly until it was in sync with my H/U display voltage, and now it reads just as accurate as my H/U.