[Rick Parker]

Do you have any sort of mesh or foam (if it will fit?) inside the rear vent. I use fuel cell foam in the valve cover vents on my 289. Ran it hard all the way home from WCSB in May and Laguna a couple of weeks ago and not a drop any where. I realize this is a different application entirely, but just a comparative example that works well for my situation.
I have also seen a small (approx 1.5") diameter wire mesh basket made from a material similar to "Pot Scrubber Material" made of stainless, so it will not rust, that was OEM for rear location of FE. They show up on EBAY occasionally.
One last thing: The PCV valve itself, is it the one for a 427? They are all weighted differently and open or close at different points depending on manifold vacuum.