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7045 alternator

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aaronac1 View Drop Down
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Joined: 07 Jan 2013
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    Posted: 04 Apr 2024 at 7:21pm
Does anyone know the acdelco part number for a replacement altenator off of a 7045? Trying to find one at a local automotive store.
Wd-45 D-17s4 170 185 190xt 7045 8070
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Lynn Marshall View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lynn Marshall Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2024 at 7:35pm
I use a 100 amp 10SI Delco . You need one with three small terminals for the tach to work. A wiring change is required and a larger pulley too, if you want the tach to read correctly.  I see that Shoup offers a complete assembly for sale.  Alternator, pulley, and small wiring adapter for that application.

Edited by Lynn Marshall - 04 Apr 2024 at 7:44pm
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2024 at 8:10pm
Someone asked this a month ago and  it seems like "MOST" of the Delco with the tach terminal are now 1 wire units.... Search of GOOGLE does not show much for the original 3 wire alternators with the extra "tach"..... but i did not look everywhere.




Edited by steve(ill) - 05 Apr 2024 at 1:10pm
Like them all, but love the "B"s.
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aaronac1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aaronac1 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2024 at 8:40pm
Im assuming that i can take off the old double pulley and simpley install it on the new one?
Wd-45 D-17s4 170 185 190xt 7045 8070
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2024 at 8:50pm
yes... the pulley are all interchangable on the BORE.. Its the diameter that is important
Like them all, but love the "B"s.
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steve(ill) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 04 Apr 2024 at 8:58pm
another option --- only 3 wire i saw...


Like them all, but love the "B"s.
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Steve in NJ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve in NJ Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 2024 at 7:49am
That's a good price on that 3 wire. That's the way to fly. As Lynn mentioned it would need the larger pulley or use your pulley. Still utilizes the same .670 shaft.
Steve@B&B
39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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Les Kerf View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Les Kerf Quote  Post ReplyReply Direct Link To This Post Posted: 05 Apr 2024 at 12:21pm
Just curious: Where exactly does the "R" terminal tap into? Is it reading one phase or all of them?
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