I need help for my 68

[aaron7621]

Does the car smoke at all when in park?

My brother had a smiliar problem with his car. Car sounded great but when dropped into gear it died. We checked out the car left and right for leaks of any sort and found nothing. They said the carb needed to be replaced since it had been rebuilt once before and probably wouldn't last so we did that. At the same time he decided to change out the manifold as well. Turns out on the underside of the manifold there was a long hairline crack in it. Combination of both made the car do pretty much what you described. I'd check the manifold out especially if it's stock assuming you have a new or fairly new carb. If not it could be the carb itself and may need replacing or a rebuilt if it hasn't had one before.