I get dropping the front end, but does it improve handling? Thanks
Yes and no. Just making something stiffer is no guarantee it improves handling. The GT already understeers badly by virtue of bad suspension geometry, and from the binding of the stock leaf spring.
That said, the lowering spring has one thing going for it. It’s nearly flat. So it doesn’t bind like the OEM spring, which pretty much goes solid.
Other considerations when using a lowering spring are:
1) Did you trim the bump stops? If not, the standard bump stops very nearly touch the control arm with a lowering spring. Which means that once the bump stop starts to impact the arm, it becomes
Therefore, either cut-down bump stops, or shorter aftermarket bump stops are mandatory for any lowering spring.
2) Did you install shorter-travel shocks with higher rebound dampening? Off the shelf KYB’s, though stiffer than stock, don’t have enough dampening to to control the higher spring frequency. So ride and handling are actually worse with softer shocks. (Note, compression dampening does NOT need to be increased).
3) What has been done to correct alignment? Camber? Caster too…
4) Bump steer. A stock GT has it. A lowered GT is absolutely horrible. Racecars normally measure bump steer in 1/16” of an inch. Lowered GT’s have darn near an inch
of bump steer throughout the front suspension’s travel. It’s literally one of the worst cars on the road in this regard.
High offset wheels exaggerate the negative impact from the skewed steering geometry.