I've been told that a stock specification oil pump is all that you need unless you are running a race engine that has very loose tolerances. Also, just reuse your old oil pump driveshaft. If your pump ever happens to seize, it's better for the shaft to give than a hardened shaft screwing up your distributor/camshaft.
I've been told that a stock specification oil pump is all that you need unless you are running a race engine that has very loose tolerances. Also, just reuse your old oil pump driveshaft. If your pump ever happens to seize, it's better for the shaft to give than a hardened shaft screwing up your distributor/camshaft.
RUN THE HARDENED shaft. The stock one is too weak if you turn any high RPM.
As for the hi-vol or reg-vol oil pump...I Agree
Run the standard volume, the high volume can create (and I know people may think this is crazy or disagree with me) too much oil pressure and sucks up horsepower. It can also put added wear on the dizzy and dizzy gear.
For oil pressure-I met an engine builder that has been building engines since the 60's. He puts restrictors on all the mains and lifter lines becasue they only need so much oil. It's crazy how it works but his 390 something cubic inch motor he made just over 750HP...so he knows what he is talking about.
my builder told me that high volume pumps are really only necessary on blower motors that need oil plumbed to the blowers. also, they can run dry if you use a standard volume oil pan.
my 410 has a standard volume pump (for a 351) with a hardened shaft.
and definately replace the shaft. they are not expensive, so why take a chance on something like that?
I've always heard running a high volume pump on a stock oil pan will cause oil starvation problems because you're sucking oil from the pan faster than it can drain back. If you're picking up like a 7 quart pan, you could safely run one, but not without it.