Shudder when letting out clutch in 1st

Posted by Donald Booth On 2014/12/31 15:07:07

I read the posts re shuddering upon acceleration, but I believe this is a different issue. I problem my 50 Packard Deluxe 8 is having happens only when letting out the clutch in 1st gear from a dead stop. It doesn't happen when up shifting or when going in reverse. The clutch and differential have recently been rebuilt and the rubber OD support/damper and the front motor mount (in the horse collar) have been replaced. I believe the shudder is less pronounced since the rubber mounts were replaced, but it definitely has not been eliminated. I was recently watching one of the restoration car shows on cable and one of the characters made reference to that shudder, leading me to believe it was a common ailment in older cars. Any ideas?