Originally Posted by 11screw50 (Post 2963939)

Shocks are a dampener, the spring carries the weight. A shock can make the ride seem rough by dampening too quickly.

Originally Posted by SkiSmuggs (Post 2965281)

Or the right shocks can make the truck bounce less under load. The 5100s are more for leveled trucks. I have the 4600 HD series and they are great.

Originally Posted by Brady420 (Post 2965334)

...
Does RAS affect the correct setup of WDH? From what I gather, RAS limits rear sag. From what I'm reading, the rear sag (or the increase in height of the front wheel wells) is used to correctly set up a WDH and appropriately transfer some of the hitch weight to the front axel.
...

Originally Posted by camper413 (Post 2963602)

Hey Guys, new to the forum. I am experiencing the starting from a stop shudder. It's quite annoying. I tow a 27 ft fifth wheel camper. I used to have a 2008 5.4L 6.5ft screw, and upgraded to a 2013 Ecoboost 6.5ft screw. Old truck no shudder ever, new truck lots of shudder. After reading about axle wrap, the low end torque of the ecoboost is causing the shudder at take off. The 5.4L didn't have low end torque like this, so i guess it didn't happen. I barely notice it with one passenger, more noticeable with 6 people, very noticeable with camper hooked up. I am interested in trying the RAS system, as I love everything about this truck, but can't stand the shudder....my wife freaks out about it when it happens.

Guess I should spend the $$ on this.

Thanks for all the input and great posts about this issue.

Originally Posted by Brady420 (Post 2965334)

I hope this is okay to post this question here about RAS!

Does RAS affect the correct setup of WDH? From what I gather, RAS limits rear sag. From what I'm reading, the rear sag (or the increase in height of the front wheel wells) is used to correctly set up a WDH and appropriately transfer some of the hitch weight to the front axel. Could the RAS, limiting rear sag, in effect, cause an incorrect setup of WHD by keeping too much weight on the hitch and therefore preventing the proper weight to the front?

Alternatively, if a WDH is setup prior to RAS installation, would the WDH setup need to be revisited?

Any insight on how RAS and WDH work together would be appreciated.

Originally Posted by brulaz (Post 2965371)

You can add RAS or air bags to reduce rear sag, but your front lift will not change much as they don't add weight back to the front.

But any time you modify your suspension (with RAS or whatever), you should re-adjust your WDH by checking the front lift before and after.

Originally Posted by Cmerollin (Post 2989659)

I installed the RAS on my tuck this weekend. The install wasn't too bad. The first side took twice as long as the last side (about an hour total). It raised the rear end 1". I used the black disk. I tightened the spring until the black disk would barely fit. The swaying seams to be alittle better but not as good as I was hoping. I'm thinking about taking it all apart again & tightening up more to see if that makes it any better. I haven't towed anything yet so I can't say if its helped in that department or not.
When I was installing it I got stuck on how to tighten the spring so I called Nolan & he answered my question right away. Thank you Nolan.

I'm thinking about putting drop shackles on to level my truck back out. I don't have blocks so I don't have the option to remove them to level it back out.