Any easy L/S swap? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 04-08-2012
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Any easy L/S swap?

I have had some responses to my locker questions but after researching further I think that because I am not off roading my truck a limited slip would be better. i have read several times the all mighty axle codes guide on RPS. I just want to swap something in easily as a PowerTrax locker is. I was thinking of finding an FX4 limited slip. I am afraid however I will get screwed over not get the right on if I order it online. Did all FX4 diffs come with limited slip? What is going to be the easiest and cheapest way to accomplish this set up? I have searched all my local salvage yards and they only have rangers with open diffs. Any help will be awesome.

Thanks,

Scott
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Old 04-08-2012
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do you have a 7.5 or 8.8 ring gear?
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Old 04-09-2012
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7.5
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Old 04-09-2012
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Either way, there is no EASY L/S swap. You have to change the whole carrier out and reset the ring/pinion. Best option is to grab an 8.8 out of a junkyard and swap it in. For a little more low end grunt, find something with 3.73 or 4.10 ratio since you're 2wd. OR you can swap in a Disc 8.8 out of an explorer. 90% of them come with a L/S already in them. All you have to do is weld shock mounts and relocate the axle seats.
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Old 04-09-2012
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Quote:
Originally Posted by sjwilson3821 View Post
7.5

http://www.summitracing.com/parts/FMS-M-4204-C75/
i installed the 8.8 version of this

Quote:
Originally Posted by brinker88 View Post
Either way, there is no EASY L/S swap. You have to change the whole carrier out and reset the ring/pinion. Best option is to grab an 8.8 out of a junkyard and swap it in. For a little more low end grunt, find something with 3.73 or 4.10 ratio since you're 2wd. OR you can swap in a Disc 8.8 out of an explorer. 90% of them come with a L/S already in them. All you have to do is weld shock mounts and relocate the axle seats.
you don't have to touch the pinion gear when you swap to an LS. check it to make sure its within spec with a dial indicator, yes but if you do it right you don't need to adjust it. I've never done one in my life and i did my 8.8 on the old truck two years ago. you're using the same shims. the hardest part is taking the ring gear off of the old carrier and putting it onto the new one but there are tricks to make it easy. IMO its easy
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Old 04-09-2012
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I would dump the crap 7.5" and swap to an expo 8.8" rebuild one with a traklok in it and shim it up tighter with an extra clutch.
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