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Thanks, Sam and Mike and everyone else —- drive train vibrations are terribly annoying and as I found not always easy to sort out. What would I do without B Bodies
Well, I finally have some good news to report. As I noted previously, the new springs helped but after period of time, the same original original bad vibrations returned at the identical speeds they always had. Apparently it was not the springs. I bought 2° shims and planned to put them in, but...
Kim, thanks for reaching out. Good idea, I have ordered a new trans mount for comparison purposes and will install it if there’s any significant difference. Would like to avoid using the shims if possible and again, not sure why I would need them with brand new springs. Will keep you all advised...
OK, so the project was on hold for a few months. Finally decided much of the cause had to be 60-year-old week rear springs. So took the plunge installed new springs made by Detroit Eaton Spring, and they have made a very significant difference. The shuddering upon acceleration is gone and the...
Geoff, thanks for the suggestion, I tried that after I rebuilt the ball and trunnion joint, didn’t run it at a high speed, but did not see any wobble or feel any vibration —
Thanks Sam, I think you are probably correct about the sagging springs. It’s the only thing that really makes sense. Going to go ahead and put the 2° wedges in. Will let y’all know how it turns out. Probably won’t be for a couple of weeks.
Thanks Darter6, waiting for the shims to arrive, hope to get to project next weekend. Trans mount is good per recent rebuild. Thanks for response, always appreciated.
Sam, the driveshaft is solid as can be — I (and others) have tried to find some play but there is none — and ball and trunion have been rebuilt and rear u joint replaced.
Geoff, ball and trunion functions smooth and easy, can find nothing amiss.
Doug, I ordered 2* shims from Summit and will let...
Motor mounts are good, yes OEM springs. I was wondering about cause of vibrations — thought is that gradual weakening can cause pinion angle to eventually cross the line of workable angles? Makes sense
Thanks khryslerkid and Doug — seems like the pinion angle is the primary culprit. The next step is to order some wedges and to tilt differential more downward. Never done this before. Is there any preferred provider of wedges?
This concerns by 1962 Plymouth Savoy. Four-door 318/727. The car has been in the family since new I have been the sole owner and caretaker For the last 45 years. She has slowly been developing a mild vibration on acceleration, close to a shuddering, that disappears around 15 to 17 mph. Between...
Thanks for the reminder. It took a while. I eventually ordered the kit from Mancini. The problem is most of the posts on differing forums are contradictory. Some claim that the adapter only fits a 318 LA and will NOT fit a 318 poly. In fact, that seemed to be the dominant opinion. Others were...
Thanks for your informative and thoughtful replies. I knew I could get additional perspectives from this forum. Still considering throttlebody fuel injection will let you all know if I go through with it.