as a racer with a 340 id be worried with that low of oil pressure, hell my stock 318 ran 25-30 psi hot 180 even after a run. try changing your oil to a different weight.also check the sump i guess youd call it if you can, i dropped my pan and found mine was loose and sucking air, had fluctuating oil pressure on my 340. also how did you break the motor in, ive seen people just throw em in regular oil no break in oil or additive if its a solid and it throws the oil pressure off and eventually spins a bearing first signs ive personally had. just some of the experiences ive had with multiple cars/motors also the crappy hydraulic lunati lifters, had 2 bad ones out of the box, tack weld broke and they were collapsed before even installing
