LA 318 Dying when put in gear and high idle issue solved!

Similar story, I had just got my car running with a 340 that is in it now. it shook bad sitting still at low rpm, really bad at 2000. I thought it may be engine balance, pulled motor dropped in 318,same thing, started checking everything driveline, pulled 4 speed half a dozen times, got good at it i could pull tranny in less than an hour. ended up being a pressure plate bad. man what a alot of wrenching but, I found it :)