I know it somewhat dangerous, but after the engine is hot you might try chocking the wheels, have someone in the car that can hold the brake HARD while its in drive, and giving it a little throttle. Just for a look see. If dipstick is blowing out, remove the pcv temporaraly and try again. If it doesn't blow out you'll know the pcv set-up may be wrong, or just way too much blowby. Never tried it, but it might point you in the right direction?
If what I saw in your last picture of your engine is what your using now, IMO I would try a different PCV/breather set-up with a regular PCV valve with a larger diameter hose. If you don't have room for the spacer that 66GMC suggested, might try temporaraly using a vacuum port on the manifold(same as brake booster), but don't leave it on the same port as the booster for long, just for troubleshooting.
The pcv should be on the carb circuit for proper A/F ratio.IMO