About to pull the trigger on this. From scaling it, with my front weight, I should be right at around #700 spring, linear. Seems awe-full light when using my other cars coil-overs in comparison to this heavy truck. I may just order a few spring pairs and see which one I like best. Anymore driving comparisons/reviews, maybe from someone with a SWB and lighter than an #800 spring?

 

Really good info so what would be the difference between these and qa1 double adjustable coilovers looking to upgrads to coilovers but looking at my options first

 

Biggest difference is the piston size, twin tube vs. much larger mono tube. And not that it makes a difference in this application, but cannot run the crappy twin tubes upside down.
I have not had a chance to try to mount my coiloversvyet, but just side by side comparison between the two, these RideTech/fox pieces are waaaay nicer than my qa1's. Especially the delrin pivot ball stud upper compared the qa1's garbage looking rubber bushings on a stud with a nut.

 

I'm looking in to doin this as well. I called hotchkis and their 2" springs for the front of our trucks are 850 lbs/in. Not sure if that helps but I figured it could be a good reference.

 

We gotta know the spring length as well I think, in order to even begin to speculate if that info has any value in comparing to...

 

I'm really wanting to do this also

 

Well, got my coilovers....


Unfortunately for me, when bolted up in my current mounts with this spring length, the lower spring perch rubs the outer CV Boot. Kind of expected it though.
Looks like I'll have to look into custom mounts pushed further back... and probably just raise my UCA mounts at the same time.

 

Looked like it would be a tight fit, but at least you can get it done proper now.

For anyone wondering about alignment I just did mine (replaced outer tie-rods at the same time)
Still had room for caster adjustments but we didn't want to mess with it all night, and according to him it wouldn't have made much difference anyway.

Any alignment pros want to chime in on these specs?

 

I finally got the truck back, and lifted it up some. I am at 4.5" or so now, still a tad bit of rubbing on the driver side, but I think it is the plastic liner. I need to play with the settings because it seems really soft, I bottomed out today while test driving it.

 

Yep, too light of a spring...pretty sure I warned up about that a couple pages back, but in any case, add some aftermarket bumpstops to the LCA pad...your shocks will thank you.