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post #1 of 7 Old 03-03-2014, 06:28 AM Thread Starter
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Truck vibration

I just installed a 4" pro comp rear blocks on my 09' f250 crew cab, to give it the stance of an F350, and I've also got pro comps traction bars but they have not been installed yet. And my issue here is, when I get on the throttle, the whole truck vibrates really bad. It's a very fast vibration. I'm just throwing out guesses here, but could my drive shaft be out of alignment? The weird part is, the vibration doesn't have to do with the speed of the truck, i notice it around 2200 rpm and up. I can be cruising at 50 mph with the motor running around 1500 rpm and I don't feel it, once I step on it, it shows up. Just need a little help on figuring this one out before I decide to take it all back.
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post #2 of 7 Old 03-03-2014, 07:02 AM
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check the angle of the driveshaft/rear chunk, when you "get on it" maybe getting to much rear end wrap causing the drive shaft to make a vibration, thats the first thing i would check


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post #3 of 7 Old 03-03-2014, 07:37 AM Thread Starter
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Originally Posted by 6.4L-NREMT-P View Post
check the angle of the driveshaft/rear chunk, when you "get on it" maybe getting to much rear end wrap causing the drive shaft to make a vibration, thats the first thing i would check

Spoke with pro comp, they said the rear blocks were not designed to be installed by them selves, they were made to work with their 2.5" leveling kit. I don't have a solid drive shaft, I have a carrier bearing so it has a slight angle to it and the leveling kit should straighten that out.
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post #4 of 7 Old 03-03-2014, 08:58 AM
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Leveling kit should straighten things out. If you don't want to level, you can just do carrier bearing shims and it will fix it.

2015 F350 Ruby Red Platinum, SRW CCLB, Color matched Ranchhands, rigids.


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post #5 of 7 Old 03-03-2014, 09:38 AM Thread Starter
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Well I had planned to do a level in the future, so why not now. Hope this fixes it. Sounds like it should.
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post #6 of 7 Old 03-03-2014, 01:40 PM
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Sounds like a good plan to me! I think these trucks should come from the factory leveled. Its just a much better stance with little to no loss in ride quality depending on the kit.

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post #7 of 7 Old 03-03-2014, 06:00 PM Thread Starter
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I think they should also come equipped with traction bars as well. They do look good leveled and I sure hope I get the same ride quality with the pro comp level kit.

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