Quote:

Cruising down the highway about 3500 to 4000 usually, I will feel an all around vib that will come in and out , at that speed it will be like counting one thousand and one, one thousand and two, one thousand and three, etc...
If I pick up speed it will just get closer together. 85 and up I just back off after short blasts because it sucks to feel it.
If I am next to a Beemer or ricer I go for it not letting them know I am driving a cement mixer. lol.
Did that help?



I have been fighting this with my 72 340 904 Cuda for some time now. I can get to 90 and it smooths out a lot. I haven't tried changing the rear tranny bushing and slip yoke as was suggested on one of my ealier posts on this. Will do that this winter and see if it helps.