Speed Wobble

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twomanymontes

twomanymontes

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This is going to sound strange, but is it possible you have 1 rear shock frozen? The rear end may not be controlled over bumps at the same rate causing a push to one side or the other. I have seen it happen before, but on a stock truck. The 35" Mudders may be amplifying the situation.
 
oohunter04oo

oohunter04oo

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98_k1500 said:
The blocks are not shifting, already checked that. The U bolts are tight and properly positioned. The truck is not being used to tow anything at the moment. It feels like someone is rocking the bed side to side. Its very subtle and gentle at first, becoming more pronounced if you don't back out of the throttle. I forgot to mention, the truck has aftermarket upper control arms to address the droop stop issue. The front end is tight, and has always been kept well greased. It has had this same setup on it for 40,000 miles with no issues. The tires could probably use a balance. Its been a while since mine have been done. I have never used balance beads. It definitely feels like the problem originates in the rear of the truck. I had a jeep that had "death wobble" and it is nothing like what my truck is doing. BTW... I do not advocate 100+ mph on 35s. Just making the point that it had been done before without this issue, so i know something is wrong.
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I am by no means trying to argue with you, but if your frontend has been like that for 40k miles i would really check it good... even though that may not even be your wobble issue. just usually these frontend don't last that long being cranked up. Good luck :cheers:

Edit: Truck looks :boobs: btw!!!
 
98_k1500

98_k1500

strange noises are normal
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i don't have any way to take pics and post them at this time... may could borrow a camera sometime and post some up... good idea on the shocks,will check them this weekend. They are NAPA reflex socks that were on the truck when i got it. probably could use to be changed anyway... may just buy some.
 
IOWNJUNK

IOWNJUNK

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Shocks may just be worn out, thats where I would look first. Thats a lot of truck and tires to try to control.

Nice lookin truck btw.
 
98_k1500

98_k1500

strange noises are normal
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Thanks, no blazer/tahoe/yukon ect. folks had this issue? I know i have seen several 2 doors do the same thing.
 
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