Hi y'all,
This is all good stuff. Discussions of oil pump, HV or std etc. I also have the full
performance library from the Chevrolet Power 3rd ed. thru Chevrolet Performance 2013
and most of the after market books on the subject, etc. From Gene's posts #18, #26
all the literature says GM stock oiling system is rock solid.
Here is what the authors have to say:
"Lubrication, the stock system works for you if you leave it alone."
They continue, "Chevy's stock oiling system is darned near
impossible to improve upon. Leave it stock and take advantage
of the enormous investment in development that GM put into
it in the first place." (ibid.)
Regardless, the follow on in pages show the L-88 pump and gears,
along with the Melling Hi Volume pump and how to modify them.
However, one thing rarely mentioned or seldom discussed is changing
the opening point of the blocks oil bypass valve. Going to a higher
flow/higher velocity pump also requires delaying the operation of
the bypass valve to ensure the engine has a clean supply of filtered
oil and not most of the oil not going through the filter.
Some where, not sure where there was discussed adding an additional
spring or washer inside the bypass ensuring oil flows through the filter
and not bypassing it, except in and emergency clog situation.
At least something to consider.
Good luck with your configuration,
God Speed!
PS - My three BBC all have the Melling HV oil pumps, I'm including the above for reference
if anyone cares to read it.
Fisher, B. Waar, B. (1971) How to HOTROD Big-Block Chevys. Chapter 13, Lubrication, p111.
Published by HPBooks, a division of Price Stern Sloan, Inc. Los Angeles, California. U.S.A.