What does a bad torque converter feel like, symptoms??

You haven't mentioned what year the transmission/converter or the year of the engine is. This might help:
Non-Lockup 360 converters: to 1976: 11" Model, with a wide (1") ring gear, 2 weights welded to the front(engine side) of the converter.
1977 on: 11" model with a single 120 gram weight

Lock-up 360 converters: 1978 on: 12" model with a narrow( 1/2" ) ring gear. No weights on the converter front.

It could be that the one-way roller clutch (sprag) inside the converter is the issue as far as a lack of pulling power, if it is a converter problem.

This transmission is a 68 904 and the converter was a used "know" good converter. The engine was a 98 360 magnum from a dodge ram. I rebuilt the transmission over the course or 3 days, watching and rewathcing instructional videos and i felt like i did it right but that could be the problem as well. It goes into all gears without issue. Do you suppose that if the converter was bad it wouldnt shift at all or in the correct way because it isnt converting the torque like its supposed to? Ive got it back out again, im sending to someone to have it looked over, if its good than ill have to look at the transmission next.

Jake