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jwin1845

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2019
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5.7L Hemi
When I'm accelerating after being completely stopped I get a vibration from the rear for a second or two and then it goes away. It also comes back around 50mph. It all started the day I had new 4" leafs and 1" shackles installed in the rear as well as new 14" travel bilsteins and 2" wheel spacers put on. I've got a feeling it's the spacers but not too sure. Haven't had a handle to remove them and test without them on. What are all your thoughts in what it could be.


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yoda

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Probably a result of the spacers, you changed your driveshaft/u-joint angles.
Do you have to accelerate at 50 mph to get it to come in?. If it only does it on accel I wouldn't worry about it, if it does it all the time I would.
Is your truck a long box with 2 piece rear drive shaft?
Drive line angle vibrations can be a real pita to eliminate.
 
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jwin1845

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Yea. I was also thinking driveshaft angles. I did install the transmission drop bracket and carrier bearing drop kit to help in the beginning before the leafs and shackles when I just had blocks.


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yoda

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If it only does it on hard accel I wouldn't worry about it, if it does it all the time wellll.

Drive line angles are always a compromise on a pickup.

You can take a brand new half ton truck, put a fiberglass topper or some tools in the back and get them to vibrate on hard accel from a stop.
 
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jwin1845

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2019
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This is true. I guess it's something I'll have to deal with or chase. Once I need new tires I'll be putting new wheels on also with -44mm offset so that I can take the spacers off and still have the same stick out for the wheels. Having them centric will help and hopefully eliminate.


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