I am running the stock powered by ford valve covers with no baffles, the left side has a standard twist-on vent cap made by Mr. Gasket, the right side has a breather with a tube going to the bottom of the air cleaner base. i just drove the car 4+ hours coming back from the FEP BBQ(which was awesome, BTW) and slowly it was getting hotter and hotter, by the time i got home the stock guage had just maxed out....There is lots of this white thick foamy mess inside the air cleaner lid, definately coming from the breather tube..same on the right side, the breather is full of it. It has never done this before and didn't do it for the first 400 miles i put on the engine. I changed the oil about 300miles ago and the dipstick is not white or foamy, it looks perfect on the stick. I can look at the roller rockers and they have clean oil sitting on top of them...this 351 has some blowby, which might be my problem(why is there light smoke coming from the breathers?) I have pictures but i loaded them to a camera instead of a memory card, and now i cant find the USB cable.. any help is greatly appreciated, tomorrow i will order some tall valve covers with baffles and hope this helps, oil has been slowly leaking from the 2 breathers and onto my headers, so at least the tall VC's will solve that problem..and BTW my overheating issue was duie to being almost 1/2 gallon low on coolant, i think the upper heater core hose is leaking but i havent tracked it down yet, just thought i'd mention that in case someone says the head gasket is blown(highly doubt it)
~Mark~
~Mark~