Denny and lt1s10.....

as far as the oil "pressure and volume" you both are right and wrong..... Denny.... your theory hold true under normal conditions.....as the oil gets hotter it also gets thinner thus needing to move a higher amount to keep the same pressure...

clearence is NOT the only thing affecting pressure....heat issues do to.... Yes you will gain 10-20% percent more pressure with a HV pump unless the oil is "overheated" which I think he is.... then when it is I don't care how much volume you move you ARE NOT going to have the sufficient pressure you should have.... re-read the post and try to understand were I am coming from...same theory as pulling a thermostat completely out.... if you do the engine WILL overheat....due to too much flow...same here applies.....

Techinspector.....What I was trying to explain here is that if he is too high on static compression he can use a head gasket shim to lower the compression to get into a safer level.....a .040 shim can drop it a bunch and is cheaper either milling the tops of the pistons or buying new ones and have them re-hung?....

I personally think his oil temps are way too high when he experiences the problem...( try an oil cooler) I get this from his compression and HV pump combined..... I made this mistake 20 years ago on my very first engine...