As we discussed in the last thread regarding how much wattage you can run on a factory system, we noticed that our factory 105 amp alternators are not capable of producing enough power to feed a JL Audio 1000.1 amplifier, with wiring and the alternator being the two key issues.

To resolve the alternator issue, there are, fortunately, factory replacement options that we can embrace.

Fortunately for us, GM used the same mounting points for multiple amplifiers. The common CS130 and CS130D used in many of our cars can be replaced with the GM CS144 (or CS-144). The CS144 amplifier comes in varieties that produce from 140 amps to 200 amps, with supposedly a 250 amp model also available. These can typically be found in larger cars and SUVs.

The following link will outline the available models: http://www.alternatorparts.com/cs130...uv_upgrade.htm

If anyone is considering running over 500W of amplifier power, you will certainly need to consider upgrading your alternator.

I will be doing more research in the next few days on which cars you can pull these alternators from at a junkyard for cheap. If anyone has any particular range of models off the top of your head, please list them.

i would imagine 2500'* with dual batts or plow prep would have the bigger alts. anything else i can think of probably wouldnt be cheap

Cheap is relative. At my junkyard, all alternators are the same price, and that price is cheap.

your pretty lucky then, the JY'* around gouge for anything for a car that is more expensive. i would think any upscale avalanche, yukon, escalade, tahoe, etc... would have a higher output alt. not sure how you would tell without looking at the info before you go to the yard.

Trucks like mine and justins beleive it or not only have 105A alts..But S2 3800'* have 140A so they are easy to come by

My S2 IIRC from a 2000 Regal has a 105A (technically 102A) alternator, hence the search for more power.

As I understand it, the following would also apply: 2001 Eldorado ETC (140 amp) - GM P/N 10464426 according to RA, on all 97 sevilles, 97-02 eldorados, 97-99 devilles.

1999 Aurora (140 amp) - GM P/N 10464078 RA: 95-99 Aurora

3800 powered Oldsmobile Silhouette

Well i tell ya what andrei as a guy who pulls more cars apart each week than most people see in a week LOL i just pulled and S2 out of an olds ..140A
my SSEi 140A
and every oher S2 i have at the shop is 140A

Here are some examples
96 bonnevile
http://www.autozone.com/autozone/par...32_23521_4451_
97 lesabre
http://www.autozone.com/autozone/par...32_23521_4451_

As im finding a regal has a 105
supercharged or not.Odd yes but due to all the other cars that have them they are not that hard to come by
Also the front face of the alt on a regal is diffrent from the rest but ah! it is very easy to swap that front face/mount out.

Well doesn't that suck! lol. Looks like I'll be running out to find a 140A alternator unless someone can find a 200A alternator from a factory car that can be swapped instead.

im not sure of any cars that came stock with a 200a..cHANGINE THE FACE IS EASY..REMOVE THE THREE OR FOUR SMALL BOLTS AND THE PULLEY AND IT COMES RIGHT OFF JUST PAY ATTN TO HOW THE BEARINGS WERE WHEN YOU PULL IT OFF

But since that last write up was based on flawed logic that it takes 145a of current to produce 1000 watts simply because the amp is 50% efficient, I think it would be safe to say you should be able to run at least twice the amount of power you're saying on stock electrical safely.