340 Oil Priming Question First Start

Save your money and use what you have. You buy something like those rockers and you are going way backwards. None of those aftermarket rockers are worth a crap unless you correct the geometry.

Polish your shafts and grind a groove for oil.

Get a brake cylinder hone and hone the rockers just enough to knock off the high spots and then send it.

I’ve run low 10’s with those rockers and every one of them had scores in the bores from guys not running enough oil pressure at idle and not having grooves in the shaft.

What you have is fine, just clean it up a bit.