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1994.5 - 1997 7.3L Power Stroke Diesel  

Rear axle?

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Old Mar 29, 2009 | 03:54 PM
  #1  
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Rear axle?

Still learning the truck. What rear axle do I have and what locker would be best. The only off road I'll be doing is during the hunting season. I do tow a lot with it though. Looking for one of the easier to install models so I can do it myself.
96 CC F250 PS 4X4
 
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Old Mar 29, 2009 | 05:00 PM
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you either have 3.55 or 4.10. in high gear you'll be turnin about 1900-2000 rpm @ 70mph with the 3.55, and a higher rpm with the 4.10.

Also check your axle code, if it begins with a C then you have a limited slip differentials.
 
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Old Mar 29, 2009 | 05:19 PM
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The rear axle is a Sterling 10.25 rear end. Most lockers made for it will work with either a 10.25 or a 10.5 rear end.
For a easy do-it-yourself you can get a lockrite or similar that just replaces the spider gears. They will do the job and are the easiest to set up. As long as you aren't abusing it offroad all the time it'll hold up.
They run about $450 or so for the 10.25 rear axles. Check Summit Racing Equipment for it or Four Wheel Drive Parts
 
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Old Mar 29, 2009 | 05:20 PM
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Its a sterling 10.25 inch ring gear. If you tow heavy I would not recommend a true locker.
 
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Old Mar 29, 2009 | 06:49 PM
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I know it has the 4.10's. TJ what do you mean you would not recommed a true locker?
 
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Old Mar 29, 2009 | 07:29 PM
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From what I have heard other say that tow heavy with a locker is that its not very streetable and broken axle shafts are an issue. No experience with it cause I have never run a locker but thats what I have heard a few others say who do have experience.
 
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Old Mar 29, 2009 | 08:36 PM
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I dont need an off road locker. Just something to keep both tires planted. This thing is a race car!
 
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Old Mar 29, 2009 | 09:18 PM
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A locker on the street don't sound like a good idea to me, your handling and turning will be a effected in a bad way.
 
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Old Mar 31, 2009 | 02:29 AM
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It all depends on what you call a true locker. In simplest terms a true locker is either a full spool or a mini spool. These are in simplest explaination a tube that holds both axles together along w/ disk to hold the ring gear to be turned, and replaces your spider assembly. Ive ran a detroit locker on lots of my stuff and they are about as serious of an offroad locker as you can get,... but they are still streetable. They are torque lock system that replaces your spider assembly. These are always locked,... sort of. while under torque these will remain locked under excessive cross torque (cornering) one side will disengage and free wheel until it straightens out and the torque locks them back up. It is a gear ratchet assembly on the sides, w/ tapered teeth to allow them to come apart and ratchet under cross torque. These can be used with heavy towing, they make these for sizes from jeeps to semi tractors. I have used them in my trucks before. They handle very well. The only time they ever acted strange was when you come out of a corner and gas it hard it will lock up hard (sometimes enough to jerk the truck) that and on slick or icy surfaces it takes some getting used to because it will not disengage (not enough resistance.) It will fishtail very easily on ice so you learn to feather the throttle on slick surfaces to control it. Despite these details the traction is well worth the downfalls. They use standard gear oil and require no special additives. And will operate with one tire enitrely off the ground, as well as since theyll unlock in the corners will not tear up your tires or affect normal driving. Theyre about $600 for our trucks. I ran one got rear ended and had the rear axle housing bent slightly and had to torch the end of the housing off and then pry and hammer the shaft out, and was till able to pull it out and put it in another truck, and run it til I sold the truck while turning 40"x16.15"x15" mud tires.
 
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