Hi all, YES this is a question about SBC PCV systems with older (no-hole) valve covers. YES I have read all the old threads and thanks to all for their valuable knowledge! BUT, my situation was not covered exactly so I'd like to describe what I intend to do and get some feedback from the experts: The Block is a 1968 truck 327 factory crate engine (warranty replacement) - 2 bolt mains WITH the road draft tube hole next to the dist. WITHOUT the cast-in oil-fill tube provision at the front! The intake is a Weiand 8004 dual plane, filled and painted to look factory but also WITHOUT an oil fill tube hole or boss (there is a flat spot however - NOT big enough to mill for an oil tube but big enough for a threaded PCV valve.) What I intend to do: In the spirit of back-asswardness: 1. I intend to drill and tap the front of the intake manifold pad (where an orig oil tube might go)for a threaded PCV valve and plumb it to the back of the Q-jet for vacuum. 2. Utilizing 1.25 inch O.D. brass or copper plumbing fittings, place a 45 degree elbow in the factory road draft tube hole (1.25in) and then about a 6 inch long piece of the same plumbing tubing running up and away from the distributor to a spot just over the firewall corner of the driver side valve cover. I will cap this tube with a small universal valve-cover breather and this is where I will fill oil from the top and where the engine crank case will breathe from. So . . . will I need an original chevy oil vapor separator under the intake to keep the new fill tube from blowing oil on my windshield or will the vented breather cap be enough? Will this system work? Has anybody done this nonsense before? Apologies for the length of this but . . . meh . . you know!