alex perini
Active Member
What is suggested for the 500 hp range for oil pumps is the standard melling oil pump fine or do I need a high volume I have a 440 with a hemi 6qt pan
426 hemi`s already have a 1/2" pick up from the factory. The oil passage mod does helpl.HVP and also get the larger pickup tube and drill the block and tap it.
Drill the oil passage in the block and pump to 1/2 inch. and radius the turn. Where it dead ends at the turn that is where it cavitates. My son is doing Dave 400 replacement motor. I saw they ordered one for that also. So I can have him or Dave "69383valiant" take pics of that.
This is a mod that is done on hemi's they build for nostagia dragsters. without a dry sump.
Factory Yes. after market not all.426 hemi`s already have a 1/2" pick up from the factory. The oil passage mod does helpl.