I like this! ^^^^^^^
The duration @.050 is 241*’s. A 3.23 gear is a good bit to low. 3.91’s at a minimum.
What size tire is in the back?
What ignition do you have?
What is the initial timing at?
Is it a MoPar performance distributor?
What octane are you using?
Do you have a tachometer in the car?
Check the spark plug color. If it’s dark, (black) you’re running rich which is an issue as well. If it’s dark but not black, your still a little rich.
The timing curve suggestion and the secondary opening timing is a very good one.
Ditto as well as match the top end.
IMO, it’s worth the expense and time to do it.
I’d also like to know what you have for an exhaust system. Not just muffler brand.