Re: Got a vibration...at 55MPH
Pinion angles are the first thing I generally look at with vibrations. 5mph is a pretty narrow window, so its completely fine at 1-54 and then like 60-80?
If its the driveshaft, you can find an empty space of road and get up to 55, pop the truck in neutral and see if the vibration goes away. If its a wheel/tire/brake issue, it will persist. Might be a bit tricky if you only have a 5mph window, so just use caution.
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'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING 
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