[66Submarine]

Well, it doesn't seem to be a giant problem for me. The most shot-out truck I have burned an average of one quart every hundred miles at last check (smokes blue at high speed or under heavy load) and got an average of 18MPG doing it. Too many mild hot rod engines with no issues for me to really worry too much about it, I guess; it just doesn't seem to really present much of an issue.

IMO, no way in hell that you gained <6MPG going from a working, normal PCV valve to that. That's just absurd. Considering your highway mileage is something like 18MPG, that would mean you got 12MPG before (which is worse than me beating on my "stock" one ton with 4.10 gears and driving up to 70MPH at times, btw), and that would mean that the magick PCV valve reduced your average fuel consumption by a third!

So, I'm not buying that. What kind of 20,000RPM nuclear-powered spaceship is this 283 that supposedly makes it so intolerant, anyway? To burn 2/3 of the fuel on average with the magick PCV would mean that your A/F ratio would had to have been absolutely horrific with the normal setup, which always seems to work fine for everyone else.

I mean, really? You are saying that before this magick PCV setup that you were dumping half-again as much fuel as the engine wanted to run on into it; that's a LOT, and that is still an averaged number!