Torque convertor and detonation

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.

Makes sense, i will likely need to adjust timing regardless, this issue has just shined a light for me on the fact that this tc is really mismatched to where this motor is making power. Other similar builds (“smog dog dyno flog” almost identical) show good power coming on between 3000-5300. Stock smogger 360 passenger car tc or maybe even original 318 tc with weight welded on, is holding back a lot of potential. It took me this long to realize the tq is what is keeping engine out of its powerband in the majority of daily driving conditions