Need Help With Shock Selection Please

[dpmcvittie]

My daily driver is 85 Silverado 4x4, AT, SWB.
Every little bump in the road is like running over railroad tracks, I mean Stiff!
I would like the ride to be much much smoother. I believe the orig owner added a leaf support but theres no lift kit. Tires are 33x12.5xR15LT

Addendum: Has Rough Country R5000 shocks

 

[1987 GMC Jimmy]

I'd like to see a picture of that. If it doesn't have a lift kit, you can just go on RockAuto and get you a set of Monroes for cheaper than they would cost in the store. I'd do a little better than the economy shocks because a K-truck is a stiff ride with solid axles on both ends. Also, if you don't need those helpers, they'll degrade your ride quality so I'd take them off. If you do need them, though, fresh shocks will take the edge off the current ride quality. Have you done the bounce test and everything?

 

[dpmcvittie]

Whats the bounce test? Sorry not familiar. And I tried uploading a pict but its too big of jpeg and Im not too handy with this computer stuff

 

[1987 GMC Jimmy]

You get on the back bumper for the rears and the hood/fenders for the front and bounce the **** out of it. If it only bounces one good time and subsides, you're pretty good. If you get a lot of reverberation, that means your shocks are bad. You can test all four that way.