My 2010 GT500 is currently lowered with Eibach springs (never liked ANY of my cars that ran Eibachs, but the car came this way). Also has LCAs and adj. panhard bar. Car was aligned with a 0* thrust angle. Eyeballing the rear tires, they are centered nicely in the fenders. I get no wheel hop in any situation, it either hooks if I GRANDMA-BABY it, or will RRRRRRRROAST the tires off with no regrets.
Car has NO traction in 1st and 2nd gear on only a pulley an tune. Running 20" stock width Invos. In third it will sometimes haze the tires starting at 80mph, if you roll into the throttle. Under 50F, forget traction until 4th. I can understand the car makes power, but what I can't understand is how little traction there is. Should this car hook better than it does?
So all this is leading me to ask the question does lowering the car change the pinion angle, or some other rear end geometry that screws up how the car hooks? I know from another project car of mine, the pinion angle made a big difference in if the car hooked up or not. Change it one way, it "bit" the road more, turned the other way, the car felt like it was on ice, and would just lay rubber.
Would I benefit from an adjustable upper control arm, or something else to help the car bite? Please no drag radial or Viking shocks suggestions, yet :burnout:trying to keep it streetable.
I know the Eibachs are the worst thing you can put back there, and I do have the stock springs in a box. I get the feeling that Eibach designs these springs with no thought other than "make the car lower", and never tests their product on the cars the springs were designed for, and I feel you can actually make the car handle/hook up WORSE by using their product. Yeah, it looks good, and changes the stance but I feel like there is zero compliance (over bumps) back there, AND it messed up the whole geometry of the car. I've read posts from other members here who have 100+ more rwhp than me, and on similar tires, they "dead hook 2nd", or "hook good from a dig". It's almost comical how little this car hooks.
Thanks!
Car has NO traction in 1st and 2nd gear on only a pulley an tune. Running 20" stock width Invos. In third it will sometimes haze the tires starting at 80mph, if you roll into the throttle. Under 50F, forget traction until 4th. I can understand the car makes power, but what I can't understand is how little traction there is. Should this car hook better than it does?
So all this is leading me to ask the question does lowering the car change the pinion angle, or some other rear end geometry that screws up how the car hooks? I know from another project car of mine, the pinion angle made a big difference in if the car hooked up or not. Change it one way, it "bit" the road more, turned the other way, the car felt like it was on ice, and would just lay rubber.
Would I benefit from an adjustable upper control arm, or something else to help the car bite? Please no drag radial or Viking shocks suggestions, yet :burnout:trying to keep it streetable.
I know the Eibachs are the worst thing you can put back there, and I do have the stock springs in a box. I get the feeling that Eibach designs these springs with no thought other than "make the car lower", and never tests their product on the cars the springs were designed for, and I feel you can actually make the car handle/hook up WORSE by using their product. Yeah, it looks good, and changes the stance but I feel like there is zero compliance (over bumps) back there, AND it messed up the whole geometry of the car. I've read posts from other members here who have 100+ more rwhp than me, and on similar tires, they "dead hook 2nd", or "hook good from a dig". It's almost comical how little this car hooks.
Thanks!