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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Rear end help

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Old Jul 21, 2019 | 02:14 PM
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Default Rear end help

How do I know what rear end is in my truck with out ripping the hole thing apart
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Old Jul 21, 2019 | 02:22 PM
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Look on the little metal tag that's hanging on a bolt, on the rear diff cover. Read the code, type it out here. (Or google search it). Also, your drivers side door sticker will tell you.
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Old Jul 21, 2019 | 02:37 PM
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Drivers door sticker only gives you ratio and LS or not. It doesn't tell you what axle you have.
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Old Jul 21, 2019 | 02:44 PM
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Sticker on the door says axle H9
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Old Jul 21, 2019 | 02:51 PM
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Also looks like some one has taken it apart before and did not put the tag back on the bolt
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Old Jul 21, 2019 | 03:30 PM
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4.2/4.6 = 8.8 rear
5.4 = 9.75

Assumes 6-lug axles. I’m guessing the 7-lug version in the 7700 models is some form of the 10.25 rear.

H9 is a 3.55 gear.
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Old Jul 21, 2019 | 03:47 PM
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It is a 5.4 and yes it is a 6 lug
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Old Jul 21, 2019 | 03:59 PM
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From the little metal tag on my rear end of the truck:
V 907 C -- 3L55 9.75 5K25

V = Van Dyke Model 907 Revision C
Limited Slip 3.55, 9.75 ring gear, 2015-11-25
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Old Jul 21, 2019 | 08:48 PM
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Google says H9 is the 3.55 Limited Slip
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