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LostInOz's avatar
LostInOz
Explorer
Oct 29, 2019

28 Foot / Chevy Chassis, Looking to upgrade suspension...

Hey everyone, new to the forum. Proud owner of a "new to me" 2006 Chateau Sport By Four Winds 28 Ft which is running on a Chevy chassis.

Just wondering if anyone else with a Chevy Express 3500 van chassis has taken it upon themselves to improve the ride of their rig, and what the best "bang for the buck" is in regards to improving the ride of my RV.

My wife tries to help drive it, but between the sway when a truck comes by, I can't help but think we can do some things to improve the ride. Also get a fair amount of 'porpoising' when going over bumps.

It does have some kind of anti-sway bar on it already, but maybe it needs a beefier one?

The rig has 50,000 miles on it, so I would imagine upgrading the shocks would be the first place to start?

What about sumo springs? Too many options... not sure where to start. Thanks in advance.
  • Also, don't overlook the sway bar bushings. They don't last forever and they do wear out. I know people who spent good money on a new sway bar when all that was needed was a set of inexpensive new bushings.
  • Hi LostInOz,

    I love your name considering you live in Kansas. :)

    We have a 2007 Ford E350, but my comments will apply to your Chevy.

    If buying new shocks, I highly recommend the Heavy Duty (HD) Bilstein shocks. CLICKING HERE will take you to my write-up with many pictures showing why the HD bilstein is the best choice for a motor home application. Not just the shock itself, but the mounting hardware is heavy duty. Then consider that wimpy hardware failed on my old shocks. If you wonder, I CANNOT say the "HD" rating makes a rougher ride. They simply offer great handling.

    You have a front and rear stabilizer bar on your Chevy. Before replacing them, make sure their end links are tight. Any play in them will reduce the bar's effectiveness. With 50,000 miles driven, it's likely the end links need tightening. The 4 rubber bushings that make up the soft part of each end link might also be worn to the point of needing replacement. Sometimes they can wear to the point of being missing.

    Over-inflated tires, exceeding the requirement of your actual load, will also cause the rig to wander excessively along with offering a rougher ride. But your fuel economy would improve slightly.
  • Thank you for he suggestions. I'll get the shocks ordered.

    Any opinion on the sumo springs? I keep coming across references to them online and some people swear by them...
  • New shocks are a relatively inexpensive first step IMO.
  • I have a 2006 Tioga 26Q on a Chevy Chassis

    I had the porpoising problem on mine,the shocks were the original when I bought it at about 90000 miles. I replaced them with Bilsteins front and rear.This got rid of the porpoising and all the side lean.

    Shock Warehouse usually has the best prices. On Edit I see that Amazon is even cheaper

    The already great ride was improved with this simple addition.

    It already has the largest sway bars as original equipment,I might check and see if all the mounting bushings are in good shape other than that you should be good to go.
  • I found air tabs improved wind gust control caused by large trucks going the opposite direction.

    I'm currently getting new springs that will have more carrying capacity. RV's are often over loaded in that area. The old springs are from 2004. One leaf had broken and the air bag brackets had broke free from the frame. I'm hoping for a large improvement in the ride.