I've got a 1990 rcsb 4wd silverado that has an l92/6l80 awd drivetrain now. I've lowered the torsion bars completely to help with the ridiculous torque steer but now I want to help it out even more. The entire front end was basically rebuilt a few years ago. Should I try to raise the bars a little? I just get an uneasy feeling sometimes when I really get into it.

 

Rear sway bar and a beefier front sway bar will do wonders for handling.

 

Yea sway bars are a huge help. Just adding a rear sway to my ecsb made a huge difference. Also lowering it some and putting good shocks helps a lot too.

 

any suggestions on what to buy?

 

Sway bars and good adjustable shocks..

 

sway bars and shocks like everyone said. Belltech makes good shocks and sway bars. check out their "street performance" shock line. Hotchkis also makes very good stuff. if you are wanting better handling for a more offroad application id say check out Pro Comp Pro Runner shocks and Bilstein 5100 series shocks

 

If you really want it to ride and handle better, ditch the torsion bars and install coil-overs up front.

 

Lower it
Sway bars

Just getting any shocks wont do, you need to get shocks that are valved to the spring rate. Doetsch Techs 2.0 shocks are nice, QA1, Ride Tech are just a few. QA1 and Ride Tech also have many coil-overs available to. Viking is another coil-over that seems to be popular.

I'd go with coil-overs to, front and rear. Add a 4-link while you're at it. You have options. That way you can tune your suspension to whatever driving style you're going for. Track, auto-x, canyon carving.

A little inspration
Its 2wd but still bad ***. I believe the rear set up is the same for 2wd as it is for 4wd.
My 1997 C1500 autocross truck at LS Fest 2013

 

^ Obviously if budget isnt a concern a triangulated 4-link would be the best way to go.

As far as brands, Hotchkis, DJM, and Beltech are all good companies for the lowering parts. And for shocks, I bought Bilstein replacement shocks(4600 series) for the 03 AWD SS Silverado. They are great! Nice and firm yet not harsh at all.

 

He did mention "raising the bar a little"
But, even a 4-link can be built on a budget. Triangulated or parallel.