Ls1 marine alternator and starter help
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Ls1 marine alternator and starter help

  1. #1
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    Default Ls1 marine alternator and starter help

    All,

    Im close to finishing up my ls5.3 swap into the scarab jet. I still need a marine alternator and starter. I am having trouble finding them. I found ls1 marine starter but it was 450$ no thanks. I have heard the automotive ls1 starter is sealed anyway is that true. I'm sorta stuck does anyone have any advise? Thank you in advance.

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  3. #2
    AKA OhOneWS6 Last Mohican's Avatar
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    Are you doing fuel injected or carbed 5.3? If carb just change the alternator over to a 1 wire 10-SI. Is it an enclosed engine compartment?

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    Default Alternator

    It is fuel injected and enclosed.

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  6. #4
    AKA OhOneWS6 Last Mohican's Avatar
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    The correct answer is you need marine parts. Fire is a bad thing on a boat. An enclosed engine compartment increases the chance of vapors building up in the bilge. That $450 starter is a lot cheaper than replacing a boat or the expense of personal injury because of a bilge explosion. Is it aftermarket fuel injection or GM stuff?

  7. #5
    Member tmoore's Avatar
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    The ls1 starters are sealed and supposed to be OK in an enclosed engine compartment, but they are not USCG approved.
    I run the factory ones on mine.
    The alternators I'm not sure about. I have the automotive ones on mine for now, but I still don't have hatches on mine so the stick out of the boat anyway.

  8. #6
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    It's the gm stuff. Ok thanks I've got a hatch with large air intake areas and have a blower fan. Looks like I can find a marine alternator cheap but I'm not sure if it needs to be a delco style or internal rectifier ect...

  9. #7
    Senior Member sandeggo's Avatar
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    I don't know where you're located but I have always got starters and alternators from Ron in Parker, AZ. Might try giving him a call, (928) 669-6411 Pro-line performance. I've had 2 of his alternators on my builds. single wire, high output

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