Weird shaking when the converter locks

[Clifford_6.4]

Has anyone had any problems with Suncoast tripple disc converter? What I was explained was that the impeller is very aggressive and when the converter locks in 4th it makes the truck shake but when I get on it it's fine. Is this normal or should I be looking into anything else that would cause the issue?

 

[08Monster]

My buddies Cummins had a problem like that. Soon as the TC would lock in OD, it would have a shake till you go a little bit faster, hammer on it, or let off the throttle. It was a bad ujoint which caused drive line vibration. Drive line vibration on a sh*tty Cummins equals a cracked transmission case. Something to check I guess?

 

[Clifford_6.4]

Hmm okay I'll check it out thanks for the info!