4bbl running rich.

Try pump gas, 89.
Test drive it at 32 total timing/full advance and move 2 degree up till it pings..then go back 2 degrees and lock it down.
Stiffer spring on the secondary is what it sounds like.
'If holley vac secondary'. Go stiffer on the spring till it gets a flat spot into the secondaries wot...then go light till it just goes away..that's the spring you wanna use.
Intial timing can be dialed last as we were going to focus on the wot richness.