I took it out last night with the A/C on MAX!!!! Tough to get the car going from a stop without stalling. Gotta abuse the clutch a little more to get it rolling. BUT man, does that old A/C blow cold air! or it's just the small interior.
Also, in my '79 bird, Ford had that great idea of using nylon teeth for the timing gears with the timing chain to reduce noise. Great until it slips a tooth.......
I had a distributor begin to seize in a 351W ('79 TBird) that did some wonky similar stuff once or twice before it seized and took out the cam gears. Could this be a change in timing to cause this affect rather than the motor actually stalling for a moment?