Hi gear heads, put them togeather on this.. New to me 427 BB has a issue. At WOT my oil pressure drops to about 35-40 psi and I get heavy oil mist and oil droplets out of my valve cover breather. lower the rpm and oil pressure back to 55-60 psi and misting stops. I'm thinking oil is collecting in valve train area, not getting back to 10 qt pan as quickly as needed. What do you think and what would be the fix, :idea:
Could be several things, sometimes it gets tricky finding the problem. What pan do you have? Could be lifter bores worn, crack in pickup which is comon on the milodon standard pick. The extreme marine one helps. I have seen some guys run a # 10 or bigger line from the fuel pump plate to the lowest point in the valve cover to allow oil back the pan faster. Try lowering the oil one quart at a time and see if that helps. sometimes to much oil in the pan and the crank will airate/whip the oil and keep it away from the pickup. Pickup clearance is also a potencial problem. Thats the short list, try lowering the oil level first, then start tearing stuff apart.... Do you have pan evacs? do you have baffels in the v cover breathers?..........