2003 7.3 PS Cargo Van LSD options? - Ford Powerstroke Diesel Forum
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Old 02-18-2014, 04:54 AM
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2003 7.3 PS Cargo Van LSD options?

I've searched the web and different manufacturers and could use some advice from the wise folks here.

I have the 7.3 powerstroke 2003 model, essentially stock outside of DP tuner and fuel recirc mods.

I'm looking for more traction when towing, but I'm having a really hard time navigating the aftermarket options.

There are air lockers, electric lockers, friction plate, gear driven, and "ratcheting" types, compounding that it seems that Ford put any one of several rear ends in their vans at any one time.

I've contacted a couple companies and they ask me what "spline" I have.. how would I know that? (sorry for being ignorant on this).

I could use some help and advice.

I was hoping for a lower cost option because the van is a 3rd vehicle. I wouldn't mind a locking differential but I sent some emails and it seems that only air or electric lockers are available.

What do you folks recommend?
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Old 04-24-2014, 07:16 AM
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I have a 2001 e350 box van and also want to upgrade to an LSD. First you have to figure out what axle you have. There is a code on the driver door sticker that will tell you the ratio, manufacturer, and whether it's LSD. On mine it's a dana, but I had to read the code on the axle itself to figure out the model # (70-268 I think). I looked up that # in a dana catalog but had to call them to get the spline count (32). Dana makes a power lock LSD that gets good reviews, and new they go for $650 on ebay. I'm pretty sure the gears need to be re-set when these are installed, so that gets expensive, like maybe $400 or $500? Good time to change your gear ratio if you're so inclined.
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Old 04-24-2014, 11:07 AM
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I solved my traction problems by selling it and getting a 2000 7.3 F-250 CCSB 4x4. I miss the handiness of the van but the truck is more fun and I needed a legal back seat for the kid.

7.3 PSD vans are holding their value pretty well, If I didn't need to haul a kid around I would follow the advice above
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Old 04-24-2014, 01:30 PM
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You really did solve your traction problems!
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