CS-144 140amp alternator upgrade howto

[Justins76]

My 76 originally had an 10si alt that I upgraded to a 94amp 12si. Well since I'm installing aftermarket lighting and a Mark VIII elect fan, I decided to put in a CS144 140 amp alt like I did in my Firebird. First thing to note is that alt is bigger then the SI, so in order for my stock brackets to fit it, I had to notch the top bracket where it bolts to the intake manifold. Once a notch it cut in, it will allow the bracket to swing up higher. The bottom bolt and bracket fits without mod. Also, the alt is not threaded for the top bolt. I used a 3/8" helicoil and bought a flange bolt form Ace hardware 1" long. Now both the top and bottom bolts use a 9/16" hex socket. For the wiring, I used ACDelco part number 88861073 which plugs into the stock si connector at one end and has a cs connector at the alt end. It has a built in resistor for using on cars with a voltmeter. This alt can be used with V-belts with a simple pulley change. Alt is from 94 Caprice with the 140 amp alt.