new 340 engine start up questions

yes yes yes. Its the 2500 RPM that whips the oil off the crank to lube the camshaft during the lapping process of the lifter cam contact. This is important as well as seating the rings. Moly rings with the right cylinder finish require next to no break in but cast rings do. Chrome rings seat pretty fast as well but cylinder prep is usually called out on what ring you are going to run. I would actually advise break in without a windage tray to get max oil sling. Also make sure to run a radiator with a stat installed. No garden hose cooling as you want the motor to get to operating temp as fast as possible to properly tension rings.