i have a 68 3 speed on the floor when letting the clutch out i will sometimes get a shuttering a shacking i then disengage the clutch and it will disapear or may happen again. i do not believe it to be me i have standard trans for more than 30 years. any thoughts

It happens and there are several things that cause it.

I have had it happen to me through the years, but generally it was b/c I wasn't driving right/hard enough and it would go away after a while??????

Might be something as easy as putting her up tight against a strong wall and slipping your clutch for just a bit??

Anybody else on to this crap???

pdq67

I have a three speed with the same problem.I have noticed a patern to it. only when I am on the highway for more than an hour at 65 do I get the shake though the whole car, Its only first gear and not consistant. Its only letting out on the clutch. Its a new clutch that does the same.driving diferent as talked about before will not solve it. lots and lots of things can cause it low comp, overheating, bad cluth align, misfire plug, wire, motor mounts, trans mounts, oil on the disc,.... Puting your car against a wall and letting out on the clutch to glaze it smooth might help with the stickyness of a clutch but put a junkyard bumper on first might save you some other problems. ha ha

run out on the fly wheel is a good one.