Dangerous Drag Strip wobble

[woodurb69]

I took my car to tristate for the first time recently and every time i was finished with my run the car took a really hard whip to the left then the right. i adjusted tire pressure. no luck. I tried gradually rotating off the throttle & still there. it wobbles left then right every time creating a very dangerous condition at 110mph. its not when i hit the brakes its when i let off the gas. anyone ever experienced this or know of anything to help this?

[chris91]

You might want to list what car you have and any suspension mods, etc done to it. Just trying to help ya out.

[jad0087]

sounds like control arm bushings

[woodurb69]

1989 mustang hatch. aftermarket upper & lower tubular rear control arms. 4.10 gear. new ram clutch, world class trans. alloy axles. limited slip. 17" low pro Hoosier drag radials (that suck so bad i cant get any traction at all. even tried a different driver. it has a air bag in the right rear and i removed it thinking it may have been unloading weight onto the front & unloading the rear on decel. nope still does it. i think the arms are pretty old. the bushings dont look in the best shape. i replaced the upper bushings on the rear end housing because they were half gone.

sorry i thought my sig would have my set-up but it did not upload.

[chris91]

Yeah Id check the bushings. My old 92 GT did that and it was the lower control arm bushings. Replaced the arms with aftermarket ones and never had a problem. But it wasnt just at high speeds, you could feel it anytime after letting off the throttle from wide open.

[Stangman]

The cheaper the control arms, the quicker the bushings go to shit! Do yourself a favor and either buy better control arms or head down to Cincy Speed if you're close by and get the lakewood replacement bushings. I'm pretty sure Craig stocks those still.

[woodurb69]

Can't really afford new arms. Hopefully I can just replace the bushings only. Thank you for the help guys.