Crankcase evacuation

[Grec]

Grec, I would absolutely run a pcv and breather on your engine. What was the reasoning for not doing this? You see the results. Oil everywhere and noxious fumes. Hook it up. You will be glad you did.

Oh, I did already. Stock single-nipple breather and stock PCV. The builder wanted the engine to breathe more during break in and suggested I leave the pop-in breathers on going forward to let the crankcase breathe... but I couldn't take the fumes and the oil.

I just wanted to make sure that there wasn't an real issue w/ excess pressure after reading this thread.

[Kevin71]

Can you run a vacuum line from the air cleaner.  Would be easier to add without having to drill in the intake.

[brads70]

Can you run a vacuum line from the air cleaner.  Would be easier to add without having to drill in the intake.

No, not much vacuum up there.

[cudabob496]

always good to have an air/oil seperator in the PCV line

[jhaag]

Can you run a vacuum line from the air cleaner.  Would be easier to add without having to drill in the intake.

Intake manifolds almost always have a vacuum port. Not sure why the OP had to drill one. Also most carbs will have a large vacuum port on the base plate as well. So full manifold vacuum sources are not hard to find. Most OE systems then would have a breather on the valve cover opposite the pcv, connected to the air cleaner to allow fresh air into the crankcase.

[Chryco Psycho]

never  connect the PCV into the single runner port , usually on #7 runner  use that for the power brakes & plumb the PCV into the center plenum so all the cylinders eat the fumes equally

[HP_Cuda]

My Mopar M1 intake did not have a port which puzzled me but I made due with the ports of the base of the carb.

[moparmaniac59]

There is a port for manifold vacuum on the carb baseplate, but it's usually used for the power brake booster. I had to drill a port because I needed a large port to attach a vacuum hose. There was also a smaller metered vacuum nipple on the front of the carb baseplate. Too small. That's the problem with these old Mopars so as I had posted, I drilled & installed a 3/8" pipe fitting. And like Chryco pointed out, don't install it in a runner as it will cause a lean condition.