Alright guys, i need help. My Jeep keeps throwing oil out every underneath and I am at my wits end.

Backstory:
This is a 2000 with a 97 motor swapped in. No pre cats or extra o2 sensors. I did the swap, and for a little bit it was fine.
After I had pulled the spectre cowl snorkel out and installed a factory intake is when this seemed to start. Whether or not that’s part of it. I don’t know.
Driving down the road it will leak oil in the back, and drip onto the exhaust and there’s a BUNCH of white smoke behind us.
What we have done so far is change the oil filter adapter seal, RMS, oil pan gasket, and valve cover gasket was done during engine swap. The last thing I have done is changed out the gasket at the camshaft position sensor.

After I did the camshaft position sensor it seemed fine. Today we drove it about 2 hours away, and about 1.5 hours on the way home it started smoking again.
Now the weird part. It seems to be doing it after a hill. I’ll go up the hill around 3-3500 RPM, and it won’t do it until after I let off the gas. If I continue staying on the throttle it won’t blow smoke/leak until after i let off.

I just replaced both of the vents on the valve cover with ones I had laying around (cleaner than existing ones) and new seals on the valve cover itself.
Oil appears to be being pushed out of the camshaft position sensor seal still. Possibly a crankcase pressure issue?
.

 

A 97 motor would have a distributor rather than a camshaft position sensor.

 

Not if it's living in a 2000 XJ.

Have you tried disconnecting the CCV hose at the manifold and plugging the manifold to see if vapors blow out of the crankcase under pressure? Is the front vent filling up the air filter housing with oil? Have you done a compression test on the engine since you installed it?

Those valve cover elbows are not both vents. The rear one has a fixed orifice in it that acts as a PCV valve and bleeds crankcase vapors into the intake manifold to be burnt. If both those elbows are CCV valves, you could be building vacuum in the crankcase because not enough air is replacing what's being drawn off, provided one is attached to the manifold. If you have a lot of blowby, it can push oil out everywhere if those CCV elbows are not attached to a vacuum source or venting enough. It sort of sounds to me like blowby is pressurizing the crankcase with power on, then the vapors are being sucked into the manifold when vacuum is high, as in letting off the throttle.