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Old 02-20-2011, 06:56 PM
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switching f250 to f350 blocks

Hey just bought a used set of f350 blocks and ubolts to put on my 250 to raise the rear a lil bit. Is there anything special that I need to do to do this, or is it just a simple swap of the blocks?

Also does anybody know the torq specs for the ubolts, and what springs would I need to add to make it like a 350?

Thanks in advance!

Last edited by smokin_h; 02-21-2011 at 12:53 PM. Reason: added stuff
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Old 02-20-2011, 09:25 PM
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Possibly longer U-Bolts......That should be it. Good luck....
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Old 02-20-2011, 10:15 PM
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simple swap of the blocks and a swap of the badges that be it ..
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Old 02-21-2011, 10:17 AM
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got the 350 ubolts, it looks simple enough, but just wanted to be sure....thanks!!

Anybody know the spring difference inbetween a 250 and 350, while its apart I may make the springs like a 350, ive got access to more leaf springs... also the torq specs for the ubolts?

Thanks!!

Last edited by smokin_h; 02-21-2011 at 12:54 PM.
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Old 02-21-2011, 06:27 PM
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U bolt torque specs from an Icon lift are 185 ft-lbs...should be the same for the stock U-bolts.
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Old 02-22-2011, 02:55 AM
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What's the thickness difference between the 250 & 350 blocks?
Thanks,
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Old 02-22-2011, 04:07 AM
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Quote:
Originally Posted by tricktom1 View Post
What's the thickness difference between the 250 & 350 blocks?
Thanks,
I believe 2"
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Old 02-22-2011, 04:12 AM
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i will go outside when the sun comes out and snap a pic of my rear end for you so you can see the spring pack on a f350
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Old 02-22-2011, 04:35 AM
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smokin_h,
dont know if this helps but here are some pics i snapped with my camera phone of my spring pack...my truck is stock f350 with leveling kit, the rear is still stock just picked up the front to match rear




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Old 02-22-2011, 07:34 AM
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Quote:
Originally Posted by THE SILVER BULLET View Post
i will go outside when the sun comes out and snap a pic of my rear end for you so you can see the spring pack on a f350
Thanks for the pics!! Just looks like the top helper is the only difference, that will be easy to add to the spring pack I would imagine Ill run to ford to get the frame rail brackets and see how bad they wana rape me for the springs, I may go to a spring shop for the helper springs tho if the ford parts guy has rapist tendencies lol.

Thanks FastStrat for the torq specs!!
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