standard or HV oil pump?

[jeffko]

What you guys are not considering is friction. The more volume you put through the same passage, hole or hose the more friction you cause...ie pressure.

Most stock pumps run at 40psi and as low as 15psi at idle. The added volume and pressure that comes along with the volume is needed to force the oil into places it does not easily go under the tremendous forces applied to the bearings and machined surfaces in a high torque engine under full load. Anyone that has ever used plastigauge has seen how thin the space for the oil is and that is a static load. .0020-.0025 is not much of a space especially when you consider the piston driving the big end of the rod down against the crank to force it to rotate against the resistance of the rest of the drivetrain, rear wheels and weight of the car.

Nobody thinks twice about spending several hundreds of dollars on performance parts, but the distributor gear is very often overlooked. It's not that a guy won't buy the correct gear, but rather he is unaware of the problem. Last year there were 3 guys that munched distributor gears in our club and one of them twice in less than 500 miles. Murphy's law can apply at anytime, but most engine parts will perform to design when properly oiled. You can not expect a cast gear to survive against a heat treated, hardened steel cam gear. It will eventually fail.

By the way, I have built my engine and several others even though I would not consider myself an engine builder.