340 Oil Priming Question First Start

@Dicer nailed it about the oil flow out of the top holes on the rockers. You will get very little. Just enough to drool down the rocker and lube the valve stems and rocker pads.

On the rocker shaft installation. Here's how they install. Passenger's side, the notch in the end goes to the REAR and DOWN. On the driver's side the notch goes to the FRONT and DOWN. Driver's side appears to be correct.