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Old 03-26-2013, 01:07 AM   #1
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Exclamation i need help rear axle/differential

I have a 99 ford f150 kingcab 4x4 it has a 19 axle code on the door sticker now i from what i understand that is a non-limited slip or traction lock axle. Right now the driver side tire doesnt engage and where i go i need that extra tire for traction. Now i know there is acouple different ways i can solve this replace the rear axle or get some kind of kit for the gears what im wondering is if anybody knows the easiest ways to fix this problem and cheapest ways.
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Old 03-26-2013, 01:20 AM   #2
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Easiest and cheapest would be to weld the rear end but I wouldn't recommended this unless you like the added wear and tear. The plus side is that it gives you the locked traction you are looking for. A spool does the same thing. If it were me I would check the salvage yard and pick up a ls rear end and get it checked out and installed. Mine ran me 750 total.
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Old 03-26-2013, 02:05 AM   #3
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Thanx i noticed yur in sc im in pageland well jefferson right now i was wondering if you no of a good place to get an axle? And what model specific model would be my best bet to get one out of?
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Old 03-26-2013, 02:16 AM   #4
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You are going to be looking for an H9 code on the axel tag. That is the limited slip version with 3.55 gears. I would go for as new as I could. Newer generally means less miles... generally. Im way down on the coast in Georgetown so I dont really know of any salvage yard in your area. Any mechanic should be able to point you in the right direction but honestly I would google and call around and see what I could find. 97-03 ford H9 rear end is what you are looking for and they should be able to tell you pretty quickly over the phone. Good luck and if you have any more questions feel free to ask.
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Old 03-26-2013, 02:27 AM   #5
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Thanx for the help one last question will i need to change out anything else other than the axle?
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Old 03-26-2013, 02:34 AM   #6
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Nope, just pick up the whole assembly. I would get a good mechanic to check it out or get some kind of warranty from the place just to be sure of what you picked up. They should be able to do the install there too so I would ask them about it. Other than that be sure your brakes are at least as good on the new one. I need to correct something I said earlier, If you have disc brakes in the back do not get a 97 or 98 rear end with drums. It still shouldnt be too hard to find what you need though. After that everything should just bolt up and roll on.
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Old 03-26-2013, 02:40 AM   #7
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Cool sounds good thanx again oh and i have drum rear disc front
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Old 03-26-2013, 04:08 AM   #8
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I believe that the reason pervat said don't get a 97=98 axle is that they use 12 mm wheel studs, but if I'm not mistaken, so does your 99. It's the 2000 and up that use the 14mm studs. If that is correct (I believe it is) then I see no reason why a 97-98 axle wouldn't work fine. Both will be 8.8 and not the bigger later axle. 2000 is also disc brakes in most cases. He absolutely correct with the H9 code for the posi axle. (just read where he said 97-8 with discs on the rear. didn't read it close enough, but the info still is the same)

Your front differential doesn't drive the drivers side wheel from the factory. Actually only a max of 3 wheels will pull on a 4x4 and that's with a rear limited slip. Your rear axles (2) and the right side front axle are the three drive axles. The front can have a locker put into it, if you want to spend the money. That is the only way you will have true 4x4. It really affects the way you would drive and the feel on a normal roadway, so that is why they don't come that way from the factory.
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Old 03-26-2013, 04:53 AM   #9
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Thanx akdoggie i have another question i have cv shafts in the front what gear ratio would that be or can i put whatever i want in the rear? Also [MENTION=41788]akdoggie[/MENTION] both front tire will spin but only the passenger tire in the rear spins. Driver rear doesnt spin.
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Old 03-26-2013, 02:03 PM   #10
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You have to keep the same ratio's for the front and rear. You can change them in pairs, but they can not be of different ratios, or your wheels and transfercase will bind up and either break something or not move period. Usually it's you break something. Stick with the 3.55's and your good. The frt axle drives off the right side, but if it spins, the left side will pick up the slack, but that doesn't bode well on icy or slick surfaces.
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