Quite awhile back I think I posted on here about my 66 Galaxie doing this weird shimmy at the track when I let out of it on the big end. I had thought it had something to do with the Detroit Locker I had in it but I swapped to a TrueTrac and it made no difference. I got it out a couple of weeks ago and it was noticeably worse. The whole car would start pulling to the right under the most moderate acceleration even though the steering wheel never moved. So I put it up on stands to look it over. I had replaced the OEM control arms with Spohn Performance adjustable control arms with poly bushings. First thing I saw was what looked like back/forth movement on the lower control arm bushing on the pass side. So I took the control arms off and found all the poly bushings were egg shaped. The worst were on the upper control arm. I ordered new bushings from Spohn and now it no longer pulls to the right under acceleration! I only had maybe 30 passes on those bushings and less than 5000 miles. I guess they didn't like those 1.65 60ft times in a 4300lb car, lol. My conclusion is they are probably ok for just street driving but if I want to do more drag racing I will need to come up with something better. Here are some pics, sorry for the poor quality. It's a long story.
