Made the swap to electronic ignition and the car barely runs now

Which timing mark were you using? The white or the green?

Just started reading this.... the balancer slipping would be the right suggestion and you found it. Explains why the chop came back.... your 10 BTDC is actually, what.... 50 BTDC? 30 ATDC? And it explains the hard cranking.

So tell us a bit more about this engine, so folks can give you better info on where to time this. Is it a stock 360 or what?
Oh sorry, I should have said that. I was using the white paint mark on the original. I bought the car last fall after this guy used it at the track and occasional rides, so I don’t personally know EXACTLY how the motors built, all I can do is go off what he told me. So it’s a 360 bored .30 over, edelbrock 1405 carb with manual choke, edelbrock performer intake, it’s got the police interceptor heads that have “serious work done to them” (his words not mine), an unknown lunati cam that he said was a big cam, Keith black pistons, and I’m not sure more then that. I just installed Mopars electronic ignition kit to convert it over from points (odd thing was he was running points, but had the harness for electronic so I’m not sure why he didn’t run electronic)