oil psi problems

i'm not sure if i already asked u guys about this. my oil psi is really low after i make a pass then it comes right back to 75psi i was told that i could drill a hole in the back of the head and put a -4fitting and line and run it back to the oil pan??? anybody ever done this ?? the fella that told me this has a thor headed motor a have c's...thanks eric

If it can be confirmed that your problem is indeed related to too much oil in the valve cover area I would suggest working on restricting the flow to the top end so that oil stays where it belongs. I ran drain back hoses like that on my old Cleveland for a while with mixed results. In some other posts I have seen a lot of discussion about oil pan design, oil foaming, and windage creating problems in the pickup area. I would be inclined to investigate those possibillities as well.

dkp

Eric check and make sure that your oil return holes are open in the front and the rear of the head to the Block, some gaskets cover them slightly and make oil return slow.....


Randy

what block?

it's an svo block it started doing it when i put the new top end on it heads, intake, rockers,push rods,lifters. i never had a problem with the old blue thunder b heads and all the old parts?? i was also told that i could buy push rods with a smaller hole to help keep the oil in the bottom?? thanks eric

what size restrictor?

I'm sure you've checked this, but are the lifter oil holes properly oriented?

yes i had the block at the machine shop cause i had 1 hole wore out so i had it bushed and he checked all the other ones said the rest was good...eric

i have no idea if thats your oil problem or not but yes you can run the retun lines down from the back of the heads i had to do this on my c heads with the c@c block because the return holes dont match up the blocks where made for hemi head oil return. brad