I have a 89 5.0 automatic that starts to shakes very bad at 30 right through 55. I checked my front end out and found a inner tie rod bad so I replaced the inner and outer. I got the car aligned and rebalanced my tires. It made no difference I figured I would replace my U joints even though they looked and felt OK. On my front yoke there is something that looks like a harmonic balancer. It was starting to fall off so I removed it the rest of the way reinstalled the drive shaft. The shake is a lot better know but I still feel a small shake around 40. The drive shaft still has the weights on it to balance it. I'm lost at this point has anyone had this problem?