Ford engineers designed the Mustang rear axle to articulate thus the 2-piece driveshaft, A-arms rubber spring loaded bushings,
Panhard and Rear upper /
lower control arms with soft rubber bushings as a result it’s more difficult to drift slide loosing control of the vehicle. But as a negative the rear axle will articulate during hard launches.
OEM sway bars, shocks, and struts are designed to accommodate soft OEM springs. You’ll need to address the shocks/struts, front and rear sway bars to benefit the firmer springs foundation for improved launches. The issue you’re experiencing is OEM limited slip differential engaging one axle before the other. As a result OEM
Panhard bar and
control arms rubber bushings are flexing allowing the rear axle to articulate off center by design and the soft OEM springs, shocks, struts, and sway bars will not apply enough pressure to stabilize the 2nd engaged tire bite from wheel hopping which increases axle energy in the wrong direction. Once power is discontinued the rear axle whips back into position producing the 2nd experienced affects.
Now the reason I mention lower control arm bracket was because I assumed you lowered your Stang just like the rest of us. If you drop the rear more than ¾” you’ll need relocation control arm brackets to maintain rear axle control. Keep that in mind…!
It’s really difficult to maintain control of your Stang with a little here and there. You’ll have to get deeper into your
suspension for the best results and naturally deeper into pocket.
Suspensions components in kit form offer the biggest bang for the buck in the long run.
Eibach Pro-Kit is probably the most affordable
suspension kit with the least drop of 1.0” front and 1.5” rear. Other has 1.0” front and back but tend to cost more.
As a bonus performance
suspension kits not only improves launches and aggressive handling response but also provides an overall better quality ride in general. For I it was money well spent that I enjoy daily and we can’t say that about many things in life…lol.
Roush is the only manufactured I know of today with improved handling springs close to factory height with only ½” drop compared to OEM. Roush Performance
Suspension kits have a high standard of quality and a little pricy.
Mustang Coil Springs, Rear (2005-2014)