360 Magnum valve train noise

Which is? :poke:
The oil supply hole in the side should face the center of the engine. If installed facing the outside, they can drain oil out of the lifters when the engine sits and get ticking on startup. But since his is doing this while running, I'm sure that's not the case.

To the OP: Brian, when this was built, was proper pushrod length checked for? Nearly all aftermarket rollers are ground on a reduced base circle, so longer pushrods may have been needed. Just a thought.