68 Firebird suspension questions

[Marcus SC&C]

Mowjo, oookay they`re using Stage 1,2,3 etc. AND Catagory something something too gee that`s not confusing...
Thing is this. Remember all those suspension geometry issues I covered above? The package you`re currently looking at addresses none of them... The springs are a good idea and they make good ones. We`ve used them in our shop from time to time. Lower arms do..well...nothing at all. Actually that`s not true,they look cool,that`s something. The upper arms add some + caster to the alignment which is good but it makes no fundamental change at all to the ailing geometry. It helps the bumpsteer a tiny bit. Upper arms,theirs,ours,anyones are physically incapable of changing/improving the overall geometry. You have to make vertical changes to make the kind of improvements the front end really needs. You can use taller spindles (like ATS,Heidts etc.), the G mod and or taller ball joints (like we do). Same with the steering,different arms,move the mounting holes (like ATS) or use taller tie rod ends (like us). For example our Street Comp Stage 2 uses taller upper ball joints to achieve much improved camber curves and higher RC location etc. Combine Stg.2 with the G mod and you`ve got some serious performance geometry comparable with modern performance cars! Stg.2-Plus (new and not on the site yet) splits the difference between the two with no mods to the frame (G mod) required. The tall tie rod ends eliminate about 80% of the factory bumpsteer. Overall gains are very similar to the SC-AFX package with ATS tall spindles but of course without the C5 brakes etc. You can see that stuff here http://www.scandc.com/suspensions.htm and diagrams that show the actual geometry improvements here http://www.scandc.com/suspensionspecs.htm You won`t find diagrams like that on most (any?) other suspension company sites because the before and after diagrams would be practically the same! If you like GW springs go ahead and get em,they`ll work well for ya. Once the geometry has been addressed by all means get their lower arms with the Del a lum bushings upgrade. They don`t help the geometry but the bushings are really good and the arms are nicely made and look neat. I don`t have a thing against stuff that just looks cool but IMO it`s wise to have a good solid performance geometry first. Mark SC&C