IF the car has stock springs and swaybars, you should probably stiffen the rears up to like 9 if not 10 (maybe more, but work your way up) and then bring the fronts up until you're comfortable with how the car reacts...it can be a band aid for bars that aren't setup how you want them to be in mostly transient situations.
For Drag racing I am using 0 on the fronts and on the rear I used 8R and 9L. We were playing with the settings earlier this week and when everything else failed to produce a spin free launch we set the rears at 12 and it finally hooked.
For road racing I put them at pretty much the highest settings on all 4 corners.
WHEN I had swaybars (stock front, HO rear) & stock springs, I had them at 5 all around. Seems to be about stock DeCarbons. When I removed all the swaybars (stock springs), I put them up to 7 and its a lil stiffer but I don't get as much body roll staying with 5. It's a good comprise. For drag racing, 0 for the front and about 9 for the rear. Before I moved, I was playing with settings at the local track. 9 clicks with 15# in the pass side airbag with IC brackets has netted me 1.7x 60 foots on a 'ok' prepped track. Previous BEST was 1.87 with an average of low 1.9's.
Thanks this gives me a good starting place.
I guess I should have added that I have a wagon.
Eibach springs front and rear.
Hotchkis Bars front and rear.
Hotchkis rear trailing Arms.
Air lift bags in rear springs with Individual fill.
I was running the stiff Bilsteins, but I'm converting to the QA1
Did the fronts today.
Looking Into getting a whole new suspension kit for 96 impala. Had for about 10 years now just sitting, so like to bring her back to life with a while new upgrade rear and front suspension including shocks/struts. Just put a new battery, fresh Royal purple oil, k&n oil filter, and k&n air...
I'm working on a project that has B-body frame clips. I installed the Hotchkis Impala SS springs, but it's REALLY low in the front. I had a set of SS springs, but sold them to a local member. Now I'm thinking I need something more along the lines of the Global West springs (closer to stock SS...