This article is from the Chrysler-Plymouth-Dodge FAQ, by Dr. David Zatz with numerous contributions by others.
Cold driveability problems tend to stem from poorly
adjusted choke and choke pulloff, bad accelerator pump, and sloppy carb
(Carter BBS one barrel is better than Holley 1920.)
Other big driveability problem source is the fact that the vibration
damper outer ring tends to slip, which makes the timing mark WAY OFF. Which
means timing would never be accurately set. Also check for timing chain
Check by putting the engine at #1 TDC - top of compression stroke (both valves
closed) and see where the timing mark is. There are companies that re-bond
dampers with new silicone material. I think one is called Damper Dudes,
California. I don't know if this happens on other CC engines. Basically, if
your damper has an inner hub and an outer ring sandwiching rubber bonding
material, this can happen.