[pontiaclady]

Appreciate all of your prior suggestions and there has been improvements. However still having issues. Here is what it is still doing:
It seems to be a little too cold natured - takes it a while to warm up and to stay running.

After driving it awhile - at least 15 minutes, when idling at a light, can hear it start to have a very slight stumble, doesnt feel it like it is missing, but can hear the change in the engine sound. if I put it in neutral, it smooths out and there is no problem when under power. It continues to get worse as drive and if do not shift into neutral, it will stall. (I noticed that the vacumn gauge shows in the yellow around 8, very close to the power orange portion. When in neutral, the vacumn goes to the green around 12-16). After it stalls, when turn key, does not start unless give it more gas. Then it will start....anyway he issue is it is still stalling when it gets hot.

Car is 421 tripower, cam is one level up from stock, power brakes, a/c, fuel system recently redone from tank to tripower, new coil, wires.

Background from early post- items done since then:
-timing is fine
-replaced vacumn lines in engine compartment (were some hard ones)
-replaced brake booster line as it was pinching closed
-had solenoid kickdown installed - cold starting is better than before
- new distributor cap, coil, points
- exhaust looks ok, not white
- replaced some of the vacumn lines under the dash for the heaters. the others seems ok, but could not follow all of them.
- The guy that rebuilt my motor prior found that the tripower manifold had a hairline crack under the center carb and on the side, that would open when hot. Replaced with a spare manifold that was ok.

Shouldn't the vacumn at idle be higher? Shouldnt it be in the green at idle and move to the power when accelerating etc.?? I really thought the cracked manifold was the problem. I think there were a lot of issues and it does run a lot better, but still not quite right.

Any suggestions?