I had .0015 between gear and housing. After taking this apart and looking at components. I understand how it was designed. Often times my ignorance is misunderstood for arrogance. The ignorance is the fact that the pump is limited to the size of the inlet and outlet ports in relation to the leakage inside the engine. Yes you only have the main bearings and cam bearings to lubricate under 15 psi. The outlet of the pump is limited to 1/4 npt fittings which are only 5/16 inside diameter. The Oil supply to the connecting rod nozzles are almost as big as the outlet of the pump. The small block chevy pump outlet is a 1/2 or better. After assembly I noticed better oil pressure when cold and much the same when hot. The distributor valve was working more like a pressure relief. So now I have rocker lubrication at idle. once the distributor valve opens and the connecting rod nozzles have their supply the leakage is close to what the pump can supply with the factory plumbing. With out drilling and modification to discharge tube circuit and suction pipe. So how far do you go? LIke so many have said before If it works why mess with it? Yes I think it could be done. But at this point Why?
