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Thread: Bigger alternator for E-fans

  1. #1
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    I recently purchased a 34" Radiator, 05' E-fans, and a Nelson Harness. But, I read somewhere that you might need a bigger alternator?
    I have no clue on this.
    The only thing i got goin for me is a Optima Yellow Top Deep Cycle.
    06 TrailBlazer SS LS2 4.10's

    02 SC StepSide Factory Orange
    Full Bolt-On 370 - Little Cam- Victor Jr Intake -Worked 5.3 Heads - 4.56's - Built 60E - Circle D 4000

    07 CTS-V CAI, GM Performance Exhaust, Ported TB, Coil Overs

  2. #2
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    You definitely will need the 130 or larger for the '05 fans, also get the larger belt before you get back from the store....

    Do a search, some one already listed out the parts for the upgrade....
    08 HHR SS
    Black on Black 5 spd with no options


    Pics of Christine, the '05 VHO My Car Domain Site

  3. #3
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    Everything I have read is exactly what Jethro_3 said.
    130 or larger.
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  4. #4
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    Should i go aftermarket or get a bigger Delphi Alternator from a dealership?
    06 TrailBlazer SS LS2 4.10's

    02 SC StepSide Factory Orange
    Full Bolt-On 370 - Little Cam- Victor Jr Intake -Worked 5.3 Heads - 4.56's - Built 60E - Circle D 4000

    07 CTS-V CAI, GM Performance Exhaust, Ported TB, Coil Overs

  5. #5
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    Don't quote me, but I head the only differance between the 105 and the 130 was the pully size. Does any body know if this is true?
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  6. #6
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    I have heard if you put the smaller alternator pulley on you will get better amperage because it is turning faster, on the other hand it is also turning like a friggin' work horse....
    06 TrailBlazer SS LS2 4.10's

    02 SC StepSide Factory Orange
    Full Bolt-On 370 - Little Cam- Victor Jr Intake -Worked 5.3 Heads - 4.56's - Built 60E - Circle D 4000

    07 CTS-V CAI, GM Performance Exhaust, Ported TB, Coil Overs

  7. #7
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    The casing size is different on the 105 & 130. And the puley size also. I had to replace my 105 on my '01 Silvy after it puked on a Friday on the way home from work. Get an AC Delco, the other 2 from the parts stores shit on the way to the parts store, less than 10 miles new.....
    08 HHR SS
    Black on Black 5 spd with no options


    Pics of Christine, the '05 VHO My Car Domain Site

  8. #8
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    Mansfield, Texas, USA
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    Originally posted by gearheadnate@Sep 26 2005, 03:38 PM
    Don't quote me, but I head the only differance between the 105 and the 130 was the pully size. Does any body know if this is true?
    False info. The unit is larger and requires a longer belt.

    E-fans require a larger alternator.

    130
    145
    160

    Are the amperages I recall available.
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  9. #9
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    I called G and R Autoparts, where i bought my e-fans and radiator from. They had a 145 amp alternator for sale off a 2003 tahoe and they want like $100 for it. This seems like a good deal being that the guy said it has only 2 miles on it and guaranties it to work.
    What would you guys do? as far as brand and amperage?

    Thanks
    06 TrailBlazer SS LS2 4.10's

    02 SC StepSide Factory Orange
    Full Bolt-On 370 - Little Cam- Victor Jr Intake -Worked 5.3 Heads - 4.56's - Built 60E - Circle D 4000

    07 CTS-V CAI, GM Performance Exhaust, Ported TB, Coil Overs

  10. #10
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    Sounds like a good deal, how long is the gaurantee? Get a picture of the exact unit you would be buying. They ar very reputible. A rebuilt AC Delco 145 around here is above $180 with 1 yr warrenty.

    Just Do It....
    08 HHR SS
    Black on Black 5 spd with no options


    Pics of Christine, the '05 VHO My Car Domain Site

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