Engine Oil 360 LA?

TF360 said
You want something with the zddp. I use Lucas 10w40 hot rod oil. Valvoline Racing is also good

crewchief said
I've been using Valvoline VR1 Racing Oil 10W-30 with High Zinc. Best I've found for my '70 340 flat tappet cam.

I have never in decades run a high zddp oil in a stockish engine and lost a cam.
Higher spring pressures, sure.