Is 20W-50 too heavy for my 340?

RustyRatRod said
How is it for ZDDP content? I'm assuming you're running a flat tappet camshaft?

I believe he's using VR1 20/50, my oil of choice, plenty of zinc.
I've used Valvoline racing oil for many years, I'll never switch, it's never failed me. not one flat cam, zero failure.