408 small block. A mild build, roller cam, EQ magnum heads, Mopar M-1 intake. Made 420 HP, 450 lb/ft on dyno. Blows blue smoke, lots of it. Inside of tail pipes are oily. Plugs don't look too bad, and engine runs well. I pulled intake and checked alignment, all was well. Intake ports were clean. Heads are brand new as are valves etc.. I'm at my wits end with this thing. It smokes at idle and upon deceleration from a higher speed, then on to gas gives a big puff of BLUE smoke. So its definetly burning oil.
I'm going to try changing valve seals. Opinions? Any chance rings are not seated, even though makes good power? Thanks!