1st gear vibration

[Houle #382]

Posting for a buddy, 67 Barracuda 383 4 speed has a bad vibration taking off from a dead stop and only at low RPM shift into 2nd higher RPM and it starts to go away 3rd and 4th no vibration. Had the tranny rebuilt and clutch, pressure plate and bearing are all new. Vibration is so bad it shakes the dash. Anyone had a similar issue?

 

[BeepBeepRR]

Did you check the U-joints in the drive shaft? They definitely can cause a vibration.

 

[AR67GTX]

Broken motor mount or transmission mount? Bad u-joint angles can cause some vibration but what you are describing sounds more severe.

 

[Houle #382]

Posting for a buddy, 67 Barracuda 383 4 speed has a bad vibration taking off from a dead stop and only at low RPM shift into 2nd higher RPM and it starts to go away 3rd and 4th no vibration. Had the tranny rebuilt and clutch, pressure plate and bearing are all new. Vibration is so bad it shakes the dash. Anyone had a similar issue?

After a couple of calls to Passion and Brewers it was determined that the finish on the fly wheel after being resurfaced is too smooth creating a slip and grab condition. New flywheel on order along with a new clutch as it's glazed over.

 

[AR67GTX]

Ahh, clutch chatter. I misread your post to say it vibrated while already in gear at lower rpm’s in 1st and 2nd. But in re-reading sounds like you were referring to the rpm’s while actually shifting.