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alternator conversion for 3100?

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  • alternator conversion for 3100?

    Hello everyone,

    I am new to the site and this is my first post. I have a 2001 malibu with the 3100 V6. Many of you probably know that these cars have the small case CS130d alternator rated at a puny 105 amps. I need alot more juice to run my sound system than the factory alt can provide and I don't want to just buy an upgraded CS130D because I need strong output at idle and want to upgrade it later beyond what would be possible with a small case alt like the cs130d.

    What I want to do is convert the car to either a CS144 or if possible the AD244 alternator. There were heavy duty versions of these alternators I can pick up in the junk yards cheap. I know that the older generations of the 60degree v6's had the CS144 on them from the factory and I was wondering if I use an alternator bracket from an older engine to convert mine. It looks like the belt routing is different on the older generation engines. Are all of the other pulleys in the same location? Could i just by the proper belt for the old style engines and use the old style bracket to do the conversion?

    Has anyone done anything like this? I couldn't find any good pictures of the engine out of a vehicle to compare to. I know there are some knowlegable people here and any help/suggestions are appreciated.

  • #2
    If the engine is a FWD engine then it should work. You may only need the alt bracket and then get a belt that works. A RWD engine bracket wont work because they sat forward more by at least a couple inches so it wont line up with the crank pulley.

    I think this is going to be a trial and error process on your part.
    1993 EXT. CAB, 3.4L V6 TBI, 5spd manual. Sonoma
    1990 4Door, 3.2L V6 TBI, 5spd manual. 4X4. Trooper
    Because... I am, CANADIAN

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    • #3
      www.alternatorparts.com has pics of a cs144 installed on a smallport 3100. They claim to have the brackets needed too.
      1995 Grand Am SE

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      • #4
        go find one of the chevy venture minivans they got 144amp alts from the factory. i grabbed one along with all the associated brackets and pulleys that were on the side of the engine.

        i bought the adapter from the link thats posted above me just havent gotten around to install it yet.
        sigpic
        99 Grand Am GT
        3400/3500 -Solid trans mount--TCE 65mm T-body---85mm LS2 maf---1 1/4' TCE intake spacers with 3400 upper--SLP Catback with flowmaster 80--TOG headers
        Modded 3400 lifters with LT1 springs---Comp Cams 26986 Springs
        1357 cam 227 233 .050 dur
        515 515 lift 112 lsa
        15.232@88.85mph on stock 3400---New time to come


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        • #5
          geldartb:

          I've already bought a 140amp cs144 from a police crusier. Did the brackets from the venture fit your 3400? Did they have the idler pulley right by the alternator? How much was it for the bracket from that site?

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