using restrictors in heads

[olman]

Okay, after finding out to leave the oiling hole alone on head gasket, I should ask if I should use restrictors in the heads. Rockers and shafts are almost new and I'm using a new Melling hi volume pump. The oil pan is a new Milodon 5 qt.  If I restrict the top end, what do I use? does anyone make a restrictor for the FE head? does the hole have to be tapped or drilled for a restrictor? Saw one post that a split roll-pin was used. I would rather do this now before the heads go on so as not to contaminate the oil passages. The crank has been turned .010-.010 and new bearings so everything should be fairly tight which brings me back to the question of restictging the top end or not. Have a chrome set of "power by ford" valve covers if that matters. I trust your knowledge and that is why I am always asking questions on this site.

[RJP]

Some will disagree but I restrict the oil to the heads on all center oilier FEs I've built. I tap the passage just beneath the rocker stand using a 5/16 NC tap and screw in a setscrew drilled to .062". Some will say that isn't enough oil but I've had no problems so far and I've been doing this procedure since the mid 60s. I tried a .043" hole and starved the #1 exhaust rocker/pushrod of oil. Obviously I don't recommend that small of hole. I think if you restrict to .070" you will be ok.

[cattleFEeder]

Use a 70 holley carb jet, drop it in big end up.

[blykins]

If you're using a HV pump, then I would restrict. 

I use standard volume pumps for street engines and do not restrict anywhere.