Torque convertor and detonation

Slow the advance curve if it only detonates at around 2200.. so make it maybe 2-4 degrees less timing at that rpm ..slowing the advance I guess it what it sounds like.... right?
You can have more stall and that will dictate more timing sooner, Sure... but that's not your problem so to speak.

To the comment above my post..
Just a reminder...The later the convertor stalls the later the LOAD is in the rpms..so if its not loading as hard..its not running through any detonation quicker or at all.
Very true, but my comment was very situational. We’re not talking 5500 stall here compared to stock. His vehicle is daily driver, 323 gear, low comp, no quench to speak of, non race car status and that puts him in street stall (2800ish) territory. If it rattles now with the timing all in at 2500 it will likely rattle later at the same spot with a 2800 in some driving conditions. So I answered the way I did.