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post #1 of 8 (permalink) Old 03-26-2008, 12:18 PM Thread Starter
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Alternator Question

Will a 01-04 3.8l Mustang alt fit my 97 3.8l? the bolts are straight across like mine, and it looks like it will fit, but i need to be sure.

thanks

1994 Thunderbird - 2000 4.2L M5R2 now has 55k

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1996 Cougar - 2004 3.9L 4R70W - Part-out soon
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post #2 of 8 (permalink) Old 03-27-2008, 09:51 AM Thread Starter
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ok, does anyone happen to know the distance from center to center of the bolt holes? is it roughly 7"?

1994 Thunderbird - 2000 4.2L M5R2 now has 55k

1995 Thunderbird - 2002 Alum 4.6L SVO - Awaiting transplant... (Parts donor)

1996 Cougar - 2004 3.9L 4R70W - Part-out soon
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post #3 of 8 (permalink) Old 03-27-2008, 01:59 PM
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It may physically fit but as far as I can tell the eletrical connections on the back aren't the same. It's missing the single wire connector and the voltage regulator looks different.

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post #4 of 8 (permalink) Old 03-27-2008, 03:07 PM Thread Starter
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well this is an aftermarket unit. it's 200a HO and i can get it for really cheap. can i make it work? surely i can, right?

1994 Thunderbird - 2000 4.2L M5R2 now has 55k

1995 Thunderbird - 2002 Alum 4.6L SVO - Awaiting transplant... (Parts donor)

1996 Cougar - 2004 3.9L 4R70W - Part-out soon
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post #5 of 8 (permalink) Old 03-27-2008, 03:20 PM Thread Starter
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here's a picture of the back of it. kinda dark, but thats what he has posted.

http://www.knocturnalknights.com/alt/DSC02178.JPG

click the link because the picture is huge

1994 Thunderbird - 2000 4.2L M5R2 now has 55k

1995 Thunderbird - 2002 Alum 4.6L SVO - Awaiting transplant... (Parts donor)

1996 Cougar - 2004 3.9L 4R70W - Part-out soon
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post #6 of 8 (permalink) Old 03-27-2008, 06:19 PM
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If it fits then sure, you can make it work. You just need to get a wiring diagram for that alternator and make sure the wires and connector are hooked the same way.

--Chris

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post #7 of 8 (permalink) Old 03-28-2008, 10:42 AM Thread Starter
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ok, i got some pics of the plug




and a better pic of the back



if i get the 01-04 mustang plug it should be simple. where can i find that diagram, and my cars diagram?

1994 Thunderbird - 2000 4.2L M5R2 now has 55k

1995 Thunderbird - 2002 Alum 4.6L SVO - Awaiting transplant... (Parts donor)

1996 Cougar - 2004 3.9L 4R70W - Part-out soon
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post #8 of 8 (permalink) Old 03-28-2008, 10:17 PM
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Yes,, it fits... I run the same alternator instead of those large 3G units. The new ones are called 6G alternator and feature better stability and less rotaional weight.

they sell the pigtail connectors online for like 14$ or you can simply snip one off a mustang at a junkyard.

Its a direct fit and direct wire swap.
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