Another B22 running Rough, couldnt find solution n othr post

OK so I have seen lots of threads Where people have asked why their B's are running rough but I couldn't find my answer.

My problem is (i think) something to do with fuel flow. THe truck is an automatic, and in park and neutral it idles really well. However when I put it in any running gears (I.E. drive and reverse) it bogs out and dies. it will run for a little while and it runs great but Im constantly shifting into neutral and restarting and sometimes it has trouble restarting. Whenever I start the truck when its cold it starts right up.

I checked the timing and it seemed to be good. (1st time ever using timing light)

It has a new catalytic converter, plugs, wires and distributor.

Please help me...

Anyone? Pleaaaaase Im stuck....

i would start by completly redoing the timing ( if the marks dont line up) if your cam and crank line up then take your dizzy cap off and see where the rotor button is. i normally go one tooth past 9 oclock. itl run fine at 9 o clock but had to have the dizzy tilted all yhe way back twards the radiator. but i was also thinking the bump up idol sensor. theres prolly another name for it. (bumps up idol when theres drag on the motor such as a/c brake boosters n stuff.) so thers a couple ideas.

year make and engine? efi or carbi. also whats rpm is it idling at? when you put into gear does it shift hard? how long from when you put into gear does it go dead?