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alternator specs.... from idle and up

Discussion in 'The Garage' started by RootBreaker, Nov 21, 2005.

  1. RootBreaker

    RootBreaker 3/4 ton status Premium Member

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    Ok so my truck has a stock 63A alt. I know that 63 amps is at a certain rpm... anyone have breakdown charts that show the alternator amps per rpm's?

    I wanna compair this alt with a 140 pontiac transport.... I have the pontiac one but tried the swap a while back and it never worked for me... tried even with the $20 delco converter part.... autozone tested my alt and said it was good.. but i think maybe it isnt.... Im curious if the amps in the 140 at idle is more than what my stocker is.....
     
  2. 79Jimmy

    79Jimmy 1/2 ton status

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    The best thing about the cs144 is the high output at idle. IIRC it should put out somewhere around 80 - 100 amps depending on idle speed. That's just off the top of my head, sorry no charts or graphs.

    James
     
  3. Executioner

    Executioner 1/2 ton status

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    I think the difference is about 4:1
    the 63 is around 15-25
    the 140 is around 60-100
    Its worth the 4:1
    Ps. most auto parts stores only test the output voltage, at no load
    they don't load it down with any amps, so many test good with no load.
     
  4. fatbob

    fatbob 1/2 ton status

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