For that type of application I would get the heaviest spring you can find, but there will probably be some restrictions on what you can run. The stiffest spring I have seen is 1300lb, but that is for a very short one, unless you can get them custom made.

If you can come up with what you think the weight is on one of the front tires, then we can figure something out pretty easily. The easiest way to do this is to go to a scale when your truck is loaded and either get just the front weight, or only put the front tires on the scale then divide by 2.

I am hesitant to call a certain shock/spring stock height because thats actually a pretty big range. If you can take a measurement of how your truck currently sits of the distance between the lower shock bolt on the LCA to the top of the shock pocket on the frame I can recommend a shock for you. And if you get that loaded weight on the front I can help you figure out a spring that will work for you.

I will say if heavy enough springs are not available for the amount of weight you tow I might reconsider this swap. Towing with too light of a spring could be troublesome since it may be sitting on the bump stops the whole time.

Feel free to send me a PM if you have more questions!

 

I think a couple guys that run my kit use drop spindles and they work fine with my brackets. My truck has the CVs perfectly flat with stock spindles and just coilovers.

 

Atomic are making coiliver kit for 2008 Silverado 2500hd which deletes the torsion bars? If so how much and how do I buy?

 

Unfortunately I do not make kits for the 2500hd because of the frame and LCA being different. Thanks for the interest though. I replied to your PM on a possible solution for you though.

 

I frequently get the most questions regarding what shock and spring to use, so I made a spreadsheet to try and simplify the process. I attached it to this email. Feel free to PM me if this doesn't fully answer any question you have, but it should give you a good idea.

Let me know what you guys think!

I still have sets for sale! PM me if you want some!

Thanks,
Richard

 

I didn't realize you redesigned the uppers. They look good.

That spread sheet is super useful. What is the best way to estimate corner sprung weight short of getting it on 4 scales.

Also the "main measurement" section, what exactly is that measurement? The ride height shock length seems like the measurement that should be editable??

 

Its the measurement I always talk about between the lower shock bolt and the top of the spring frame perch.

The ride height is not editable because it is a result of the type of brackets used and that main measurement I talk about. Everything is based off the main measurement, which is why I saw to use a jack and adjust the height of the truck where you want it, then make that measurement.

You could do the typical 60/40 RCSB front back split if you know the total weight. So if your truck weighs 4800lb, its 1920 in the back (960 per wheel), and 2880 in the front (1440 per wheel).

 

Just waiting on the new brakes to show up! Also removed all 4wd parts in the process! And por-15 the frame!

 

That looks really good!

 

when you talk about taking the main measurement of the stock shock ride height, you say from the bottom mounting bolt to the top of the shock mounting hoop. When you say the top of the shock mounting hoop, you are talking about INSIDE the cup where the shock bushing meets the hoop, like in my attached pic...right?