stock or hv oil pump

This is why making broad generalizations is a bad thing.

How much power do you lose running a 100 PSI system? Answer: it depends. Sometimes it makes power.

Just like the old LIE that a mag takes a bunch of power to run. They take less than 1 horsepower. Less than 1, yet all the whiz bangs in gym shorts and guru internet stooges who've never seen a mag let alone used on will claim you are losing power running a mag.

The FACT is it is combination dependent. If all you build is 6500 RPM stuff than most things don't matter.

When you try to build power and RPM its two different worlds.
Yes, of course.
The lengths of what was explored was a world apart from the op's original question.


A few peoples intention to make a point or inlighten/elude to more on the subject ..or those trying carry on an old wives tale...tend to degrade and derail in the end. A arguement insues and the hypotheticals come out to join in... and bam... we are debating what best against whats needed and then mr.whats ideal shows up and its a figure 8 of brain farts, theorists and idealists crashing into one another....
If dude wants to use a hv pump, go ahead, just get the hardened intermediate shaft as well..and If he drives like me..he will need a baffle, at least too.