Alternator question

[Blackdog3]

Hey Gang,

I been having issues with my electrical system this winter on my K30. First off its not stock, has a 12v Cummins in here. The Alternator that is on there is stock chevy 350. I do need a new alternator after making new grounds changing batteries etc etc. I am not sure what I have in it alt wise but from what I found its a low amp maybe 63. Seems to low since the truck is plowing, got lights on, eltric fan and heat. I cant seem to find an upgrade that would fit into the stock 2 wire plug in. Can anybody give me some advice on how to get the amps higher. Maybe to 100-140? All the 140 amp ones i find have a different connector in the back of the alternator.

Thanks

Chris

 

[rich weyand]

Any 10SI or 12SI alternator will plug directly in. I replaced my 10SI with a 94-amp 12SI.
http://forum.73-87chevytrucks.com/smforum/index.php?topic=28215.0

Summit has aftermarket 12SI alternators up to "the sky's the limit" amperages.
http://www.summitracing.com/search/...dMatch&SortOrder=Ascending&keyword=alternator

You can also change to a CS130-style alternator, but there's no need to do that to get the amps up.

 

[firebane]

http://www.gmsquarebody.com/forum/showthread.php?t=10760

CS130 fits without modifications.
CS140 fits with some modifications

Both CS130 and CS140 will require a special pigtail that costs $25.