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Title: Limited Slip Differentials Post by: digginfool on September 26, 2007, 12:50:11 PM I've got a 2001 F350 that I put an 8" lift with 37" tires. The truck came with an open diff on the rear and I want to swap a limited slip. Currently, running 3.73 but I plan to swap the gears to at least 4.10 or maybe even 4.56. I definitely don't want a ratcheting locker or anything that's noisy or has a lot of lash to it. My motor is built up (ball bearing turbo, 90 HP injectors, 5" exhaust, K&N air filter and working on a new custom tune) so it needs to be able to handle all the torque. I've been looking online but I would like to hear the opinions of people who actually own the product. I've been looking at Detroit and Auburn but haven't ruled out Eaton, either. What has worked best for you?
Title: Re: Limited Slip Differentials Post by: Da_Mtg_Man on September 26, 2007, 01:07:33 PM Get with SwampDonkey. He's got a fettish for rearends.
Seriously, He is very knowledgable with the different brands and dependability. Title: Re: Limited Slip Differentials Post by: MuddFreak77 on September 26, 2007, 01:20:56 PM Diggin,
Youhave a Sterling 10.5" rear end in your truck. All 3 of the gear manufactures are high quality, remember you will need to change out the front gears too. Title: Re: Limited Slip Differentials Post by: IXIswamperIXI on September 26, 2007, 01:25:10 PM I usually call randy at ---> http://www.ringpinion.com/ they have been very knowledgable when I have been working on rearends and they are good with helping you out on making decisions (for example what gear ratio) I don't know if they have limited slip rear ends or not but it might be a way to go for brand new.
Also I had a '85 Bronco with a 400HP 302 on 11 inches lift (8 supension, 3 body) with 38.5 swampers 4:11 gears were not quite enough... 4:56 gears worked great, I could gas it from a stop and light them up on the road ;D I know thats a no no LOL that was back in the day Title: Re: Limited Slip Differentials Post by: IXIswamperIXI on September 26, 2007, 01:37:45 PM this is a master install kit which i HIGHLY recomend you use if you change the gears (you don't have to use yukon just a master install kit is what i am talking about)
http://www.yukongear.com/ProductDetails.aspx?ProdID=337 now this link (below) is suppose to be 10.5 but all the numbers say 10.25 but it gives you the idea http://www.yukongear.com/PartsList.aspx?SearchMode=Make&MakeID=2&MakeName=Ford+%2f+Lincoln+%2f+Mercury&ModelID=255&ModelName=F350&Side=Rear&DiffID=25&DiffName=Ford+10.5&CatID=10&CatName=Rings+%26+Pinions&CatType=Sub-Differential Title: Re: Limited Slip Differentials Post by: Chillinthemost on September 26, 2007, 11:05:26 PM I put a Detroit Trutrac in my 05 F-350. It works great (both always pull off road, and will leave 2 black marks every time) and has no bad habits. It is a stout unit and has no clutches to wear out, so it should always work like new. Factory and even aftermarket limited slip that use clutches work ok when new but they loosen up as they wear and become almost useless. I think I paid around 450 for mine and I put it in the truck with 500 miles on it and I'm at 40k now.
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