Alternator Swap - AD244 145 amp

Whippled2dr · Jun 19, 2009

I swapped in a AD244 145 amp alternator on my 99 tahoe that came from a 2003 tahoe. It is a direct bolt on for the 96-00 vortec trucks and uses the same plug as the stock 105 amp alt. You'll also maybe need a tad longer belt with this alt. I've also read that these alternators are underrated and put out more than 145 amps.

My aftermarket 200 amp cs144 alt was giving me problems and I wanted something cheap and stock looking but around 140 amps. I got it for $40 shipped on ebay.

Pics:

mikeykey · Jun 19, 2009

very nice. direct bolt on, sweet!

What belt length did you use then if its longer?

Whippled2dr · Jun 19, 2009

I'm using a Goodyear Gatorback part# 4060967 (I had laying around) which is 96.75" long and it barely fit. If you have a stock A/C compressor then you should be fine with that length. I have a Sanden A/C compressor and it requires a belt that is a little longer.

I don't mind it barely fitting for me because I'll be throwing my whipple back on and using a different belt.

AtomicHoe094 · Jun 21, 2009

i was going to say.... wheres your whipple. what happened to it?

Whippled2dr · Jun 21, 2009

AtomicHoe094 said:
i was going to say.... wheres your whipple. what happened to it?

Yea I took it off to do my hydroboost setup and also to port the outlet tube of the whipple. I'm also leaving it off until I finish with some paintwork (same color but repainting the whole truck and redoing some previous crappy bodywork done 8 years ago).

AtomicHoe094 · Jun 21, 2009

oo oo igotcha. well good luck to the paint job. did you do the Big 3 upgrade to your truck? i see some blue power wire, wasnt sure.... looks good tho!

Whippled2dr · Jun 22, 2009

AtomicHoe094 said:
oo oo igotcha. well good luck to the paint job. did you do the Big 3 upgrade to your truck? i see some blue power wire, wasnt sure.... looks good tho!

Yup. I did the big three a while back but I don't really have much stereo anymore (just an old alpine deck and old rockford amp for the boston pros. Yanked most of my stereo stuff out because I didn't want to worry anymore about someone breaking in and stealing everything.

AtomicHoe094 · Jun 22, 2009

yea i gotcha. whats your volt meter reading out now with the big 3 upgrade and the 140alternator?

Whippled2dr · Jun 22, 2009

AtomicHoe094 said:
yea i gotcha. whats your volt meter reading out now with the big 3 upgrade and the 140alternator?

13.9-14.0 volts. I want to get it higher closer to 14.4 V and I'm thinking that my 155K mile fuel pump might be the culprit. Its old age might be causing it to have a higher load on the electrical system. I have to run some tests to find out if I can improve the voltage.

The big 3 did help a good amount though. It brought the voltage from 13.3 to 13.9 V and has very few fluctuations.

mikeykey · Jun 22, 2009

where on ebay did you buy your alternator?

Whippled2dr · Jun 22, 2009

mikeykey said:
where on ebay did you buy your alternator?

03-04 tahoe, yukon, suburbans, H2 escalades etc had them with opt KG3

Here is one:
http://cgi.ebay.com/ebaymotors/ws/e...&item=270409109919&viewitem=&salenotsupported

AtomicHoe094 · Jun 22, 2009

Whippled2dr said:
13.9-14.0 volts. I want to get it higher closer to 14.4 V and I'm thinking that my 155K mile fuel pump might be the culprit. Its old age might be causing it to have a higher load on the electrical system. I have to run some tests to find out if I can improve the voltage.

The big 3 did help a good amount though. It brought the voltage from 13.3 to 13.9 V and has very few fluctuations.

Thats cool then. What gauge did u run?

Whippled2dr · Jun 22, 2009

AtomicHoe094 said:
Thats cool then. What gauge did u run?

0 gauge. I had a box laying around for when I was going to upgrade my stereo but never happened.

AtomicHoe094 · Jun 22, 2009

ii gotcha.. Damn, everywhere i look i can never seem to find decently prices 0gauge ring terminal connectors. Thats why my big3 is slow right now. freaking 1 of those damn things are like 10 bucks..

haks310 · Jun 22, 2009

LoL huuuh?

I just came across a bunch of them on ebay. They are like $6 each shipped. I know Stinger ones are like $12 each

http://cgi.ebay.com/KnuKonceptz-0-G...66:2|39:1|72:1234|240:1318|301:0|293:1|294:50

http://cgi.ebay.com/2-GOLD-PLATED-R...66:2|39:1|72:1234|240:1318|301:1|293:1|294:50

GoodmanOX · Mar 1, 2011

I'm looking for the AD244 to put on my '99 Tahoe, but all I can find are aftermarket upgraded rated around 200a or Delcos at 130a. Where can I find a the factory 140a?

steamroller · Mar 2, 2011

GoodmanOX said:
I'm looking for the AD244 to put on my '99 Tahoe, but all I can find are aftermarket upgraded rated around 200a or Delcos at 130a. Where can I find a the factory 140a?

They were an option for the NBS trucks, look one up for 2004 2500 HD. Just make sure it has the 4 pin connector and not the 2 pin

GoodmanOX · Mar 2, 2011

What's involved in swapping the alternator? Just 2 bolts, take the belt off, and unplug the harness?

Sagacious · Aug 30, 2011

which vehicles?

i've been doing research on this lately but a few things still alude me when it comes to finding these alternators in vehicles. How many different mounting style were used for the AD244? i see some on ebay that look different from each other and i need to make sure i don't get the wrong one. also, specifically...do we have any chart listing what GM vehicles (years and models) that these alternators came in? were they all factory 145amp or some higher and some lower? is there a way to know which vehicles came with a 2 pin or 4 pin connection? these questions make it hell when trying to find the right one, especially for a good price. Thanks.

qukon 95 · Aug 31, 2011

it is confusing i got the ad244 and it's a 130 amp i wanted 145 amp but the dr44r is
the 145 amp same casing as the ad 244 but the dr44r is stamped on the front of it.

my sister 07 tahoe has the ad244 but i don't know what amp it is. i paid $72.00
at the salvage yard .when u get rebuilt ones the the stamped numbers get taken off
from cleaning the cases. advance sells the dr44r alt $169.00

Alternator Swap - AD244 145 amp

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