have a 71 RS Z28 camaro with a 383 stroker motor and I just got done with initial break-in of all new valvetrain (cam,rollers, new springs, lifters, valve locks, retainers, and seals).
Currently running a Comp Cams Hyd. flat tappet camshaft (Duration 274/292, Lift .487/.501) so I don't have alot of vacuum. I am running open breathers on the valve covers and I am getting alot of oil on them. I am considering two different things to resolve this and I need some suggestions.
1) Running and open breather and a PCV valve. I am not sure if I have enough vacuum to open the valve though and I don't want to get oil on the other cover.
2) Running a pan evac to oil breather tank and then draining it every now and again. I have an air:fuel ratio gauge so I don't want to run a conventional pan evac system. Should I consider running a line from the breather tank to PCV port on carb base to help get a little vacuum?
Which would be best for a car that runs on the street 3-4 times a week and sees the track about once a month?

PCV valve typically only takes about 1" of vacuum to open the check valve. You can suck through it with your mouth (try this with a new one, retards;) )

PCV is definitely the way to go for the street. It will be more effective than a breather tank, IMO.

PCV valve typically only takes about 1" of vacuum to open the check valve. You can suck through it with your mouth (try this with a new one, retards;) )

PCV is definitely the way to go for the street. It will be more effective than a breather tank, IMO.

Totally agree. I've run PCV's on both the 400's in my '77 Z without a problem, and my new 408 has very low idle vacuum -- in fact to avoid power brake issues I converted over to manual brakes last year. I did try once as an experiment to run breathers in the covers and no pcv, but the engine oil smoke and crappy running of the engine had me back in the driveway re-installing the pcv before I could make it around the block.

That cam should give you decent vacuum. A baffled PCV from the valvecover to the back of the carb or where ever should work just fine. The only time you should get a bit of blow by from a breather is at wot when there is no vacuum, and max cylinder pressures.

I am running to breather tanks on the inner fender. I don't have a place to run a PCV. My only problem as seen in the pic is I was running 6AN. It would blow the dipstick up when I got on it. I have since upgraded to 10AN with no problems. I have yet to get any oil in the tanks. I might get a couple of drops of moisture. But I think it looks cool.

http://i68.photobucket.com/albums/i23/windsoreight/z28/f80b3c79.jpg

Ok that's good to know about the PCV opening at 1"Hg. So then in theory it should be closed a WOT (novacuum) and I won't get any oil into the intake correct? Now as far as the the other breather I probably will still get oil all over the valve cover at the track when I'm at WOT a lot right? If this is the case wouldn't it be better to run one PCV and one oil seperator (Pan evac style) breather and go into a breather tank so I am not wiping off all that oil after I go to the track? What worries me is that I have baffles in my valve covers but I am still getting a good mist of oil coming from the breather at WOT.

I am running to breather tanks on the inner fender. I don't have a place to run a PCV. My only problem as seen in the pic is I was running 6AN. It would blow the dipstick up when I got on it. I have since upgraded to 10AN with no problems. I have yet to get any oil in the tanks. I might get a couple of drops of moisture. But I think it looks cool.

So how did you plum those from the valve covers(can't see in pic)?

I am using a 10AN bulkhead fitting. The left valve cover is under the radiator hose and the right is right behind the blower. I made sure to keep them high on the Valve cover. I however didn't go through the top of the valve cover. I wanted to try to keep it clean looking. I still have some clutter under the hood to tie up.