I will have to try that in the morning if it stops raining. All I have is the stock jack so it takes me a while to get it jacked. Stupid pot holes around here are probably what killed them.

 

Slid the leaf off temporarily so it would stop clunking. I'm assuming the HD springs would raise the back end a little bit right? As far the u-bolts will I have to take one off to measure it? The sdtrucksprings website has a bunch of options for sizes and shapes.

 

You can measure your U bolts while they are on the truck. Just measure from the top of the threaded end down to the base of the "U" for length. Your leafs are 3" wide..
You may want to add about a 1/2 to the length to compensate for the extra leaf.. If they end up a little too long you can just trim them with a sawzall after they are installed.

The HD springs will bolster the truck a bit higher due to the thickness of the extra leaf, about a "1/2" maybe?. Plus the added lift from the fresh arch. You might pick up around 3/4 to 1" of lift in the back.

 

I'm not impressed with the rear springs on the truck and suspect they are part of the cause of the "bed shake" issue, although I can't confirm it. You can get a set of springs from a junk yard for cheap but, when something breaks on my truck, I use it as an excuse to upgrade.

 

I think the bed shake is a byproduct of the fully boxed frames our trucks have.. Since the frames are stiffer, the harmonic resonance from defects in the road is transferred from the frame to the body mounts with less of a "cushion". I've seen bed shake on nearly every F150 out there.. I have heard there is some sort of counterweight styled vibration damper that is available, but I've never personally seen it.


Bigger tires, smaller rims and lower air pressures can help improve the bed shake some by increasing the dampening of vibes before they get to the frame.. Softer lead springs will help too, and I'm sure a lot of the lifted trucks are not feeling the bed shake as much as the more or less stock trucks..

 

This works!! Happened to me as well drove on it for 7 months. The 24mm bolt that mounts the front eyelt to frame is facing the gas tank! I would have to either cut that bolt or drop the fuel tank. I beat mine back into place temporarily and will use clamp until winter is over. 12 9 25

 

that post is over a decade old...