I have a factory RT front sway bar, all of the bushings in the front end are new, I believe my tires are a little bit oversize, 235/60/15 front and 255/60/15 on back. I dont drive my car like a road racer but i have noticed that even taking corners at normal speeds there is a lot of body roll. Will adjusting the tortion bars help with the handling any at all....they are adjusted about as far down as they can go without the tires rubbing during cornering. They arent adjusted like that for any reason other then i like the stance it gives the car
The rear sway bar would then be the logical next step. As mentioned the torsion bar setting will give you a slightly lower CG, but no spring rate change. I'd go with the rear sway bar and see how that goes. If its still too soft in the corners (and with stock springs it likely will be) the next step after that would be stiffer springs. Aftermarket (larger) sway bars will also help, but E-bodies are just way undersprung from the factory.
Still got the smallblock in it? I'd look for the .96" front torsion bars and at least xhd rear springs. With the sway bars that should give you a pretty decent ride for a driver. 1" bars in the front would be good too, but again it depends on what you're looking for. I have 1.12" torsion bars in my smallblock car, but I'm setting it up for aggressive street/road track use, and had to use dropped spindles to get the ride height back down after running out of torsion bar adjustment. 1" bars shouldn't cause that issue, but much bigger will.
In general is it best to have bigger swaybars (1 1/4 vs 1 1/8) and slightly softer torsion bars, or smaller swaybars and stiffer torsion bars? Also, the front suspension I can do myself but it seels like most rear swaybar applications call for welding reinforcement plates to the frame and since I dont weld, thats a problem. Will this have bad consequences for handling?
Depends on the use of the car. If you're building a street car and drive it a ton, its probably better to go with bigger sway bars. I personally think you should still go with stiffer than stock t-bars, but as above I'd say .96-1" in the front and xhd type srping rates in the back (~140 lbs) with the 1 1/8" front and 7/8" rear bars should give good handling without a punishing ride. The larger sway bars give you a higher effective spring rate in the corners without killing you on rougher roads all day long.
With the 1.12" t-bars in my car and xhd rear springs I'd have to say I have very little body roll, and that's WITHOUT sway bars at the moment. But the ride is fairly stiff, and I still have 15" rims and no frame connectors. With 17" rims, frame connectors, super stock springs (better balance with the 1.12's) and sway bars the ride will get stiffer! But I plan on using adjustable sway bars, so I can dial in the handling. For an aggressive street/race handling car the bigger t-bars with adjustable sway bars may be a better way to go, since it allows you to add or subtract the sway bar input while giving you a good base, since changing springs and t-bars isn't something most people want to do all the time. But on rougher roads the ride will suffer, and if the roads are rough enough so will the handling.
Tires also play a big role, if you're using stock width and compound tires you won't need the really large t-bars, you just won't have the traction to translate all the force to the car and you'll lose traction. But with wider tires and softer, more modern compounds (or race compounds) you can put a TON more force into the car and make use of the larger bars.
