440 flexplate/ torgue converter info

Did some testing: took v belts off ran the engine up / down still feel the vibration( alternator pulley looks a little wonky so will check the run out on that next weekend),ran it down the road and vibration is there following engine rpm after I put v belts back on .. ran the engine up/ down in P / N still feel vibration in the steering wheel and in the floor at ur feet. Pulled the crank pulley to recheck the harmonic balancer had the proper weight installed , which it does . Next plan of attack is to pull 727 and check TC / trans / flexplate.