21 stud LB crankcase venting

[1933bike1937]

Does anyone know if there is any opening to draw fumes out of the crankcase between the top of the draft tube and the oil pan vent on a 21 stud LB? When I look down the draft tube it opens up into a cavity and I can't tell when it goes.
If it just draws from the valve galley I want to block off the tube and run a M.E.Wagner adjustable PCV valve. Thanks

 

[Brian]

https://www.earlyfordv8.org/forum/viewmessages.cfm?forum=18&topic=11319

 

[Ggmac]

A pcv will draw air from the rear slinger seal , remember there is no rear seal , so you will be sucking in disc material as it wears , plus road debris.

 

[Jack E/NJ]

At low speeds, probably better to simply entrain crankcase vapors or some blowby into air filter housing through a large diameter hose or tubing from fuel pump stand using a Chrysler style oil cap. Has built-in flame arrestor mesh for carb hiccups.