Okay, heres the deal, a few years ago with the blessing of my wife, alot of overtime, and my brother-in-law getting me a 472 crate Hemi from chrysler, my dream for my Cuda came true.
the motor runs great
Heres the problem, at higher rpm i get a pulsating vibration, and ive broken my second flexplate in 3 years.
The back of the torque converter is rubbing against the pump housing of the tranny(i circled it in blue where it is rubbing against on a spare transmission i have) its rubbing enough the metals turning blue from heat.
with the transmission bolted up square and torqued(the dowel pins are there) i can slide the converter back and forth between the flexplate and the tranny pump and there is 1/8 - 3/16" play before i bolt it to the plate.
ive tried two different torque converters........ same problem. you can see in the flexplate pic that it seems to be flexing until it fails.
talked to tranny shops and a bunch of people in the know and everyone says they've never seen it before.
Please tell me someone out there that knows whats going on?