You might love this. The 3500 chassis cab has a completely different set of rear springs than my 3500 DRW pickup. I have included a photo of chassis cab rear spring that shows NO bottom overload. My 3500 has top and bottom overload. This ingenius idea was on drawing board for quite a while. I came up with the idea to purchase 4 expensive solid plastic wood splitting wedges (4 bucks a piece) I slid the wedge into the spring set above the bottom overload. Before placing the wedges I drilled 2 holes completely thru the wedges for 4 heavy duty zip straps. They had to be HD because of the HD 3500. Now with load applied the 3 main springs will contact the overload sooner. I plan to tow the 5er tomorrow for a week long trip and will give it a test. This setup will not break your budget. If I don't like the ride pull out the nippers and cut 8 zip straps and pull them out. Ingenius right? Go ahead and call me an idiot It also gave me an inch of lift.

3500 Chassis cab rear springs


3500 DRW pickup

 

Nice job, let us know if there are any drawbacks. Also let us know where you got the wedges.

 

nice man..looks good!