Alternator Question?

[Dodge68charger]

Im Looking For a High Amp Alternator For My 69 C10.

Something With 140 Plus Volts. Running a High Power Stereo..

Im Going To Re- Wire The Whole Truck With An American Autowire Kit

I Heard 1-Wire Alternators Can Possibly Overcharger The Battery

What Would Be a Better Option?
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[Andy4639]

Checkout the electrical section. This has been covered many times. Plenty of info there on this. The factory 3 wire is the best hands down - the external voltage regulator.

Checkout www.madelectrical.com also he tells it like it is better than anyone.

[HO455]

Here is a link to the posts I made about converting my Burban to a SC130 alternator. Scroll to post 467.
I tried to include all the links to information I used to get mine done.

http://67-72chevytrucks.com/vboard/s...698377&page=19

[MikeB]

How did you determine that you need 140 amps? Have you measured the current draw with lights and all accessories running?

Here's the deal with one-wire alternators. They "sense" the voltage at the the output terminal, instead of at a central point in the electrical system, such as a distribution block. So while you may have 14.2 volts at the alternator, the voltage could be much less at that central point. I've seen as low as 11-12 volts, on 40-50 year old vehicles with stock wire sizes and poor connections, and lower than that (!) at the headlights. However, with an AAW kit that uses larger gauge wires and new connectors, it not a major problem. That said, I always connect the alternator "sense" terminal to a distribution block.

BTW, many AAW kits come with this charging kit using 6 gauge wires and maxi-fuses.

[Dodge68charger]

Thanks Guys. Im Running a Very High Power Stereo System So 140 Would Be My Minimum Amperage.

Will Be Adding More Accessories Dow The Road. Looking At The Powermaster Alternators or The Tuff Stuff Ones.

Im Going 3-Wire After Reading Your Posts.
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[Wrenchbender Ret]

You mean 140 amps not 140 volts.
George

[MikeB]

Originally Posted by Wrenchbender Ret

You mean 140 amps not 140 volts.
George

I knew what he meant. But on a related note, we may someday see 24 volt electrical systems, which will cut current in half and require smaller wires and harnesses. Then again, the internal combustion engine may not be around long enough to justify the initial expense.

[gmc684x4]

L31 are nice motors so are ls
I would say ls if you can make as much use of stock parts from a donar ls truck as much as possible
Manual swaps need the ls swap flywheel as the stock ls flywheel is missing atleast 20 % face contact area

[MARKDTN]

CS144 is a stock 140A alternator for like a '96 Roadmaster. You can find info on CS144 conversions from SI type alternators. You would need to convert your wiring to SI type (bypass the voltage regulator) and then go to CS. Since you are doing all rewiring, this will be fairly simple. You may or may not need an extra resistor depending on if you do factory gauges, voltmeter/ammeter, idiot light, etc. CS144 comes with a serpentine style pulley so if you are using a v-belt you will need to change the pulley.