I ran a 1965 390FE for about twenty years in my 52 Ford F1....Had a GT style performance cam and hydraulics, 11:0 compression, headers, close ratio four speed and 3:92 rear...My oiling systen was modified by using a police interceptor grooved main journal crankshaft, all bearing shells in the block had the oil holes smoothed and blended to reduce "drag" in the oil flow....the oil pump area was blended and smoothed too...the lifter valley was painted with Glyptol paint to assist drainback to the oilpan...the oil pump was a high volume/standard pressure Mellings unit....It ran 50 to 60 psi on 10W-30 motor oil....I made restrictors for the rocker arms so the high volume pump wouldn't fill the valve covers when I wound 'er up high....each rocker shaft has one oil feed hole per side under one of the rocker stands...my holes were 1/4" dia.....I took a 1/8" dia welding rod and removed the flux from two pieces about an inch and a half long and just dropped them in the oil feed holes in each cylinder head....worked like a charm...no more filling up the valve covers with oil every time I buzzed it up through the gears....this particular 390FE was built in 1977 and it is still running today in a 1963 Galaxy unchanged.
I always just stuck a Holley 80 jet down in the oil hole. Never ran the valve train dry and revved it to 7500. Well only once to 7500.
I used a flared piece of 3/16" brake line, slipped right in the hole. And YES By all means do an intro - it is required by Ryan and just rude not to READ THIS: http://www.jalopyjournal.com/forum/showthread.php?t=44274
One guy I was talking with was saying he liked early "Birds" eventually figured out he meant Firebirds...
Go get some single oil hole rocker shafts for a solid lifter 427, they're still avail new from your local parts store. They will restrict it just fine, honestly i usually skip oil restrictions on fe's.
I took a steel pin of the same diameter as the angled hole under the rocker stand. I drilled an axial .090" hole through and dropped it in the hole. It just sits in there so I can pull it out with a magnet.