Increase G-body track width/decrease scrub?

[Norm Peterson]

First thing you want to do is make sure that the camber gain is going in the direction that you want. I'm pretty sure that with the OE initial arm inclinations that the front RC is below grade and that the camber gain is +camber in bump for most of the suspension travel. I'm not sure what revising the arm length and lowering will do to that.



One thing to watch with drop spindles is clearance between the wheel/tire and the outer tierod end/steering arm. At about 4.25" backspace with a 15" wheel, the outer lips of the UCAs will probably start be the first points of interference (under combinations of steering plus bump), and this probably happens with 16" and maybe 17" wheels as well.

At a 18" wheel size, all of that stuff may fit inside the barrel of the wheels, at which time the wheel clearance issue may move to the front sta-bar or the LCA itself.

Investigate carefully!

For a PT car, you probably want some -camber gain in bump.

A dedicated dragstrip toy probably wants something else for camber gain.


Norm

[monteboy84]

First thing you want to do is make sure that the camber gain is going in the direction that you want. I'm pretty sure that with the OE initial arm inclinations that the front RC is below grade and that the camber gain is +camber in bump for most of the suspension travel. I'm not sure what revising the arm length and lowering will do to that.

Well, to have a negative camber gain, the UCA needs to be level or angled slightly upward with the LCA level, with an UCA that is shorter than the LCA. At stock ride height with stock arms, you're correct, the camber gain is positive, since the UCA's are angled slightly downward. By lengthening the LCA and keeping UCA stock length, it will increase my negative camber gain. Anywho, I'll have to look into what gain rate is most attractive for my application, I can tweak it later if my UCA brackets are made to be adjustable.

Thanks for the heads-up with the interference issues, I'll have to look it all over with the wheels I plan to run, they're 17's. With the LCA lengthened and a stock width S-bar, I'm hoping to have more than enough clearance, but I'll have to investigate to be sure. Measure twice, cut once as they say ;)

ETA: I am indeed focusing on PT with the car, drag racing doesn't appeal to me in the least.