Rear Suspension Binding With Longer Shackles

[John Rathjen]

Hey guys - I have heard from a couple different sources not to run the 2" longer shackles, because it will cause binding.

Yet, I would prefer to get higher arched leaf springs to allow for more droop, and therefore more travel (Using longer shocks of course) Ideally I would like to run the longer shackles to keep the ride height stock - I prefer the truck level, and not the raked/stinkbug look.

Can someone explain to me the theory of binding when using longer shackles? I'm fairly knowledgeable about how suspension components work, but more in the MX world. Not as much with leaf springs, although I do understand why fixed traction bars jam up a leaf spring. so what am I missing here about how these longer shackles work?

 

[GCATX]

I am not going to be much help but will ask if the weight was on the springs before the spring/shackle bolts were tightened. Assuming by binding you mean they springs are not going fully flat on bumps.

 

[John Rathjen]

The sources I heard this from didn't elaborate - but tightening the suspension bolts while the truck is at ride height is standard procedure no matter what components. It was an issue with the shackles being longer affecting the action of the springs.

 

[GCATX]

The sources I heard this from didn't elaborate - but tightening the suspension bolts while the truck is at ride height is standard procedure no matter what components. It was an issue with the shackles being longer affecting the action of the springs.

Sorry, I did not read carefully enough. I thought you had them installed already.