Could the transmission have been rebuilt incorrectly? This input shaft may be sticking out too far. Is that a possibility?
so same issue regardless of the flexplate you use, right? I'm leaning on the issue being the converter but there may be an issue with the scat crank... do you have pics of each of the flexplates installed and the tailshaft of the crank and bearing location in the tail? where the converter hub sits...Cranshaft is a brand new Scat unit. Fresh built 383 stroker. Converter bolts up like butter. Nothing in the way. I have a nice SFI approved 168 tooth flexplate and the converter presses on it. I switched it back to the original 153 flex plate that was on the old 307 I took out and there is zero play but no pressure. I can spin the converter. It barely makes contact but no play at all.
I'm still leaning towards the converter being the culprit on this issue. Other things may not be exact but... 1/8" to 3/16" is a large variance to make up... You shouldn't need to add anything to make the converter work with your trans. that's asinine....My gut tells me the converter billet cover is too think. Converter guy says he never had an issue and input shaft sticking out 1/4 inch too far
New converter then. Can't imagine anything else it could be but that if everything else worked fine. Send it the f back and ask him to perform a forensic teardown or fittingRan great stock with stock converter. Just got it back from rebuild friday. Stock converter fits just right.
aftermarket unit bottoms out on the input shaft with zero clearance to the flexplate AND…. Only engages the pump about 1/8th