Who here has put F350 rear blocks on a F250?? - Ford Powerstroke Diesel Forum
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Old 06-21-2007, 11:45 AM
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Who here has put F350 rear blocks on a F250??

I had a few specific questions for anyone who has done this.... thanks!
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Old 06-28-2007, 09:45 AM
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the reason I ask is I want to know for sure if the blocks and u-bolts will work from an 2006 F-350 6.0L because of course the dealership will tell you it won't because its a different part number...
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Old 06-28-2007, 09:55 AM
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With the stock 2" blocks of a F350, you have to change out the u-bolts due to lack of thread. When I had my DR 2.5" lift done to my F250, DR and my shop said that I could use a 1" block instead and the truck would sit 1/2" lower in the back.
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Old 06-28-2007, 10:13 AM
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They should, the only difference between F-350 and F-250 is spring ratings. There for yes the blocks from a F-350 will work on a F-250. But you would need to raise the front as well to get it level. You will also need longer U-bolts. But as you stated you are going to use the U-bolts off a F-350. Now I do not recommend you do this. I recommend you get new ones. Why because the bolts stretch when they are torqued down. There for you should use new bolts.
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Old 06-28-2007, 07:07 PM
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I run f-350 block on my f-250 when i load my car carrier the truck straight level so no light pointing the sky u need longer u bolts thats all

hope this help
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Old 06-28-2007, 07:30 PM
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yea i was planning on buying both new blocks and u-bolts from the dealership... I just want to know exactly which blocks and u-bolts to buy since i obviously don't have a F-350 VIN to give them. so basically what you guys are saying is that the blocks and u-bolts for any '05 or '06 F-350 SRW diesel will work fine on my truck??
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Old 07-04-2007, 12:16 PM
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when you go to talk to them just tell them you need the 4in (3.5) block and ubolts for your f250. they have it as an option in there computers. if they know what there doing the'll ask you for your vin and find it right away. ill check to see if i still have the boxes for the part numbers......


good luck it took me three different dealers before one actually figured it out!!!!
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Old 07-07-2007, 09:39 PM
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I want to hear from the horses mouth...someone that has put 350 springs on a 250. I believe the 350 has a Dana 80 rear axle and the 250 has a 10.5? Are both of the spring perchs the same, axle tube diamaters the same? I would like to do this lift as well but I want to hear from people that have done it.
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Old 07-07-2007, 09:59 PM
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Quote:
Originally Posted by barry1me@yahoo.com View Post
I want to hear from the horses mouth...someone that has put 350 springs on a 250. I believe the 350 has a Dana 80 rear axle and the 250 has a 10.5? Are both of the spring perchs the same, axle tube diamaters the same? I would like to do this lift as well but I want to hear from people that have done it.
your wasting money putting the spring on its would be easier, cheaper, and ride better if you just put a air ride system on the back

axles are identicle on our 03 f350 work truck to my 06 f250

Last edited by stroker03; 07-07-2007 at 10:05 PM.
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Old 07-08-2007, 12:04 AM
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There's a lot of your truck that the becomes questionable under the warranty if you swap the springs yourself. I agree with stroker and I would put bags on my rear end if I needed the extra towing cap.
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