This thread on the 2.8L was inspired by another thread on putting an AD244 on a first gen blazer, but he has a 4.3.. So credit is due where it is owed - thanks for the thread idea.

After a lot of reading, I decided to put an AD244 on my truck and blazer. Replacing the CS130 that both rigs had.

The blazer, is a 1989 S10, with a 2.8L V6. ...pretty bad, the alternator uses more power than the engine makes, but that's besides the point.

The CS130 and the AD244 have almost the same bolt pattern the bolts being spread outward about 1/8th inch or so - or about half a bolt hole. Luckily, on the blazer they use a simple bracket that is bolted to the engine. On the 4.3 or 5.7, the bracket is cast aluminum. Either a smaller bolt, or a hole that's had some custom machine work is required.

Thanks for looking.

If I can figure out how to post the pics, here they are:


Doing this in the middle of the night, parts stores were closed as were the junk yards so an improvised connector was fabricated out of a "red" butt splice. A piece of wire stripped and stuffed into the appropriate connector on the vehicle's harness.

The big grey connector on the front of the vehicle is a forklift battery connector. I have a pair of jumper cables with the matching connector on them. It comes in very handy to jump vehicles or use battery power, as popping the hood is not required.

In this install, I have underdrive pulleys. The kit had a larger alternator pulley, and a smaller crank pulley. I left the smaller crank pulley on the vehicle. The alternator pulley on the AD244 is the original pulley that comes on it. I figure the smaller crank pulley will make up for the having to possibly use a slightly longer belt to make up for the larger case of the new electron pump. The belt number is visible in one of the pics. Your mileage may vary as to which belt fits, but this one works like a dream on my 2.8.

 

First Gen write up here: https://blazerforum.com/forum/lighting-electrical-52/first-gen-ad244-alternator-install-how-pics-45964/

Got to love it, 14.4 or so volts, at an idle... with the high beams on, high speed heater blower... putting out about 55 or so amps.

Also, I forgot to mention it in the earlier post: I ran an 8 gauge wire from the alternator directly to the battery. I didn't think the cute little 14ga or so wire / fuse link would care to much for having 100 or so amps stuffed thru it.

Used this wiring diagram to convince the alternators that they needed to do their jobs. I cannot remember where I found the diagram, but a bit of google searching returned it. Posted here to help eliminate some of the frustration I had to go through to make this project work.