While you're priming the oil system, spin the crankshaft a little with the starter. It distributes that pressurized oil evenly all the way around the bearings. Did you use plenty of assembly lube on the camshaft and lifters? DO NOT idle the engine after the initial startup. As soon as you see oil pressure, bring the RPM up to 1500-2K for about 20 minutes for cam/lifter break-in. Stovebolts don't have enough valve seat pressure to need special low tension run-in springs like the small block round track engines I used to build with triple springs.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!