badass98svt said:
In that case, I'd go with different LCAs. MM makes a great piece with solid bushings on both ends.
poly isn't too great for a track car.
A big X2 on this! In my 1992 I've had Factory Five LCA/UCA for years. Last year my car started wandering all over the track. It scared the hooty-hoo out of me. Found that the urethane bushings were mush and swapped them for the aluminum bushings.
Talk about a difference you could feel immediately. The first time I launched on the hose, they bit so hard it snapped the input shaft on the Tremec 3550! You can see the carnage and the repair on my little website.
The red car was hitting 1.58 -1.59 short times but with the aluminum bushings, and after the transmission repair, the times dropped to 1.54 - 1.55 consistently.
Those hard bushings make any control arm work better, in my opinion.
I'd be more worried about the rear end wandering around on urethane than tracking straight and true on aluminum.
http://s273.photobucket.com/albums/jj240/jwyche_photos/?action=view¤t=FiveLengthSpot.flv
Jim