Another episode of "What will it run?!"

Update...
Hydraulic lifters suck. All 8 of these turds bleed down so bad at the end of a run it sounds like a 12v cummins. Which explains last few times at the track I notice the last 200+ ft of track the car does nothing, doesn't pull anymore. Then sounds like a diesel on the return road.

If you are running a stock oil pan, it's not the lifters fault.
overfill you pan by 1 quart and see if it fixes it!
If it does, buy a oil pan that has oil dams in it. Most aftermarket pan do. or weld one in your stock pan.
It's getting a gulp of air and pissing off the Hyd lifters.

Your new combo looks good to me, BUT you need to add a oil pan to that list.:)