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Old 02-06-2008, 12:52 PM
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f250 rear suspension

I am going to attempt the 4wd conversion on my truck. What are the differences between the rear suspension on the 2wd vs 4wd. I know the truck sits lower than the 4wd. Why is that? different springs or blocks?
Chris
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Old 02-06-2008, 08:53 PM
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Its probably taller blocks. The 4x may also have a higher spring rate. Measure the blocks to see how if one is taller than the other.
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Old 02-06-2008, 08:59 PM
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i think your right about the bigger blocks.... dont forget to grab the driveshaft as well from the doner truck
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Old 02-06-2008, 09:09 PM
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2wd trucks dont have blocks in the rear from the factory... thats why the 4x4 sits higher it will have a 3-4" block i think its actually 3 3/4" but I may be off thats why I said 3"-4" ..same springs in 2wd and 4wd
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Old 02-07-2008, 06:07 AM
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I've never compaired the spring hangers on the frame, they could be diffrent also... grab a tape measure, find a truck that's 4x4 and simular to what you want yours to be (same cab/bed, DRW/SRW, 250/350, etc) and park 'em side by side... spend half an hour or more takein' measurements, compairing how stuff will fit...

Quick trip to the local used car lot might do a lot of good... local body shop that has one in for repair might let you check one out... just talkin' to somebody you see at the mall parking lot or next fuel stop could work... and it's a good way to make new powerstoke friends! Tell 'em about the .org!
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Old 02-07-2008, 06:40 AM
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Quote:
Originally Posted by Cj Ford View Post
2wd trucks dont have blocks in the rear from the factory... thats why the 4x4 sits higher it will have a 3-4" block i think its actually 3 3/4" but I may be off thats why I said 3"-4" ..same springs in 2wd and 4wd


I have an 06 4x4 and it has 2 inch blocks in the back and it sits higher than
2 wheel drives..
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Old 02-07-2008, 01:37 PM
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Oddly enough, I took a trip today to the local 4wd shop and they had a 2000 4wd sitting in the parking lot. They were nice enough to let me take a whole lot of pictures and poke around the truck a bit. Looks like the rear springs are the same and they mount to the same points and same brackets. The only difference I can see are the blocks on the axle, and longer u-bolts. The front of the truck is a different story. However the frames appear to be identical as far as the holes and mounting locations go. I am going to do the conversion and document the whole project from start to finish. I guess it is time to start finding some parts.
Chris
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Old 02-07-2008, 02:11 PM
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Difference between the SRW's on 4wd models are the size of the block, shocks, u-bolts, and spring rates (this is variable though with the package you get).

Rear blocks are usually 2" for an F250, and 3.5" for F350...
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Old 02-07-2008, 03:18 PM
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Quote:
Originally Posted by Maintain View Post
Difference between the SRW's on 4wd models are the size of the block, shocks, u-bolts, and spring rates (this is variable though with the package you get).

Rear blocks are usually 2" for an F250, and 3.5" for F350...
agree with maintain. should be a pretty easy conversion. (as easy as could be i guess.) with it being a straight front axle, not independent front suspension.

later,

Marine
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Old 02-07-2008, 07:02 PM
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Pardon my inexperience with the acronyms,but what is an srw? Do you think the springs on my truck will work if the blocks are installed?
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