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Lifting an OBS to fit 40's.

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Old 12-10-2014, 05:05 PM
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Lifting an OBS to fit 40's.

This is my first post. I searched the web and this website and couldn't exactly get what I'm looking for. I'm looking to lift the truck on 40 inch tires. I was thinkin 10 inches of lift and I'd prefer suspension lift and stay away from body lift. Where could I get a suspension lift of 10 inches. But the biggest I can find is 8 inches from skyjacker. Do you guys have any advice?
 
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Old 12-10-2014, 05:25 PM
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What truck,F350?
 
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Old 12-10-2014, 05:31 PM
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F150 with dana 50 front SAS and sterling 10.25 rear.
 
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Old 12-10-2014, 05:34 PM
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That's pretty close to an F350. Leaf or coils up front? I'm guessing you didn't do the axle swap?
 
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Old 12-10-2014, 05:48 PM
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Some more details or pics of your truck are needed.
Dont dana 50 sold axlws have a different bolt circle than tbe 10.25?
 
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Old 12-10-2014, 06:04 PM
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He gave me a quote for the SAS for the front. The man said at the shop that it was either a 50 or 60 with leafs. The 10.25 has been bought just not installed yet.
 
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Old 12-10-2014, 06:37 PM
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You can lift a leaf spring suspension pretty easily. But when you start getting fairly high, things get complicated. Too much angle on the drag link is a prob. You get bump steer and bind as the suspension compresses. To level the drag link, you need to move it from the tierod to the top of the pass side knuckle. Here's a kit: ORU Crossover Steering Conversion Kit for 8" - 13" of Suspension Lift Late 1999-2004 Ford F250/F350 with a Dana 50/60 Axle - Crossover steering Dana 60 and 50 - Off Road Unlimited


If you use an older "king pin" d60, the crossover conversion is MUCH cheaper to do.

Are you against cutting out the fenders for tire clearance? You can fit alot of tire with much less lift that way.

I also didn't mention problems with the panhard bar because I feel it's not necessary to have one. My truck below hasn't had one for about 30,000 miles.
 
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Old 12-10-2014, 06:38 PM
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So you have a stock f150 and you want to put 40s on it? Why 40s? Do you already have some tirez and rims? What are you planning on doing with the truck? Whats your budget?
 
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Old 12-10-2014, 06:46 PM
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I do not wanna cut the fenders. I would rather it be as clean of a body as possible. I want it to be nice but then again it's still gonna be used as an off-roading vehicle.
 
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Old 12-10-2014, 06:49 PM
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I don't really have a budget. I was planning on the military tires or nittos with either 17in or 20in rims.
 
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Old 12-10-2014, 08:02 PM
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A Dana 50 solid is a super duty axle and has a different wheel bolt circle 8x170mm if I recall.

Look at bushwacker cutout flairs. Clean look and clearance for larger tire. You'll need at least 8" of lift plus some trimming. 9 or 10" would be better, but the front bumper will need to be trimmed pretty good.

Get the tires, measure the stock height of the truck, then jack it up for the bigger tires and measure the height again and there's how much lift you'll need. Do the SAS with a stock set of springs and go from there. An RSK is a good idea as it'll lower the spring mounts so you don't need as much arch.
 
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