When I got my last '77 CJ-7, 258 bone stock motor, the front hose went directly to the hole in the front of the air cleaner, the aft hose went to the manifold with a pcv valve.
Do a compression check on your cylinders. Follow the "dry" or regular procedure first to check your actual compression. Then, after you document each cylinder, repeat the test for each one, but first put a few squirts of 20W50 or 30W oil in the cylinder directly before cranking it to get the pressure. Document the pressures again. If you notice a jump in the compression when you add oil, you have weak rings. You can have compression within the allowables when you first do your dry check, but the compression should be the same when you add oil, if it isn't and is greater, you have weak oil rings.
If you are getting that much oil in your air cleaner, chances are that you have weak rings and are getting a some "blow by", causing more positive crankcase pressure than you should have. When that happens, the pressure will start to release through your valve cover vents, and you get excess oil buildup.
If it gets bad enough, you will start to notice your seals start to leak oil, as it actually builds up enough pressure to start blowing seals.
By removing the vent hoses and putting a breather cap in, you will stop getting so much oil in your air cleaner, but it will blow all over your engine and compartment instead, eventually coating everything with oil, then dirt, as the dirt will stick everywhere.
Don't mean to alarm you, but I've been there before, and what you are describing is exactly the problem I had. After a few years of driving it (6 months even with zero compression in #1!), I finally built a 258 motor (modified with Clifford Performance goodies) in my garage and dropped it in when it was ready, all the problems disappeared.
If you find that that is your problem, you can still drive it while you put another motor together, it will just be more of a nuisance than anything, just check your oil often, LOL.
Let me know how you make out, I'm curious now.