Any Pontiac guys on here? Need insight.

340sFastback said
Should have hole in top of lifters where push rods seats into them. And oil should push through hole up through push rods to rockers

Its also a good idea to turn engine by hand running oil pump with drill make sure lifters ride at correct height in lifter bores. I had to get a cam with smaller base circle to get my hydraulic lifters to stop hemorrhaging oil out at full lift. Some times base circle too small will hemorrhage out the bottom. So need to run oil pump get someone to turn engine by hand to verify oil not gushing out between lifter and lifter bore and oil is getting to rockers.

I know the oil should come out the hole in the top of the lifter but, there is that disk right behind the top that seems to me to be blocking oil from coming out the top of the lifter. I feel that disk should have holes in it to allow oil out of the lifter and through the push rods. We ran the oil pump with the engine at different rotations and even turned it over with me running the drill and didn't make any difference. Still no oil getting up through the pushrods.