F150 8.8 swap - Mustang Evolution

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Old 05-24-2014, 04:35 PM   #1
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F150 8.8 swap

I have a 99 v6. I've been wanting to do an 8.8 swap for awhile. I'm going the cheap route and pulling one from a local scrap yard. It's hard to come around gt rear axles around here but the f150s are plentiful. Now I know I've read on the forum that you can swap an 8.8 from an f150. My question is are there any major differences in the axle from an f150 and a gt axle? Splines? Gear ratio? Opinions would be greatly appreciated.
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Old 05-24-2014, 09:18 PM   #2
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From another forum:
"4.6 F150s have 31 spline 8.8s
5.4 F150s have 9.75 inch rear ends"
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Old 05-25-2014, 10:12 AM   #3
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So what ratio would we need for our mustangs?
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Old 05-25-2014, 10:24 AM   #4
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I'd measure the width of the rear axle because it seems to me that the truck rear ends are going to be much wider than the Mustang rears.
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Old 05-25-2014, 11:23 AM   #5
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Which takes me back to my first option. I guess I'll just keep looking for a parted out gt because I'm starting to think the f150 rear axle is going to be to large.
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Old 05-25-2014, 03:49 PM   #6
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Not only that but they mount up completely different.
It would be easiest to find one from a GT...
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Old 06-22-2014, 09:27 AM   #7
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UPDATE: Straybullitt was right. I just helped pull my buddies rear axle of his 01 GT. (Happy dance) so I'm about to rebuild this sucker. Just thought I should let y'all know.
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Old 06-22-2014, 12:50 PM   #8
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U do not know a lot about rear ends. I would not recommend you rebuilding it yourself.
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Old 06-22-2014, 04:55 PM   #9
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Quote:
Originally Posted by samuelsmith View Post
U do not know a lot about rear ends. I would not recommend you rebuilding it yourself.

thanks for the great advice you offered.
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Old 06-22-2014, 04:56 PM   #10
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I'm not rebuilding it myself by the way.
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Old 06-24-2014, 09:30 PM   #11
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Dont listen to Samuel lol you learn by taking stuff apart and putting it back together, if its wrong you fix it and learn for next time. Negative nancys grind my gears grrr

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Old 07-03-2014, 01:34 PM   #12
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if u run a 96-98 gt rear end. you'll need 1.5" spacers to make the wheel fitment look right
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