So I've got a melling 77hv and a sealed power stock replacement pump. Was told that the hv could run the pan dry in certain situations. What is the general consensus on this?

Also I have a milodan pan and the matched pick-up, the pick-up is really a tight fit. Should it be so tight, that you really have to work to get it in the oil pump? I also remeber having the pick-up tack welded to the oil pump, what do you guy's reccomend? Thanks, Dave.

If your clearances are right a stock volume pump should be fine, Some times with an hv pump you see a lot of premature wear on the distributor gear and cam. And your oil temp will run hotter due to the oil bypassing in the pump with no where to go will build heat unless you have ample bearing clearances, lifter bore clearances etc.

Thank You. What about tack welding the pick-up to the pump body? Dave.

If your not using a bolt on pick-up use a welding rod that is compatible with steel to cast iron or you can get away with stainlees welding rod.

Thanks for the halp, Dave.

What about the HV sucking the stock 6 quart pan dry under hard accel?

Originally posted by bluerebl:
What about the HV sucking the stock 6 quart pan dry under hard accel? =
Ain't gonna happen, the pump will just bypass more oil internally as Carl said.
The only thing that determines oil flow is demand.
Demand is dictated by clearances, both bearing & lifter.
Lifters will only flow as much oil as the orifices in the lifter & rocker assembly allows regardless of the amount of oil presented to them.
You will pass slightly more oil through all these "leaks" at a higher pressure but not much,, you can only flow so much volume through a certain size hole ;)

I was 99% sure it was a myth, just confirming.