Too much air pressure on valve cover breathers

drugster said
Hi:
I'm just finished the rebuild on my stroker small block, but in the first passes, after proper break in, when I rev up it blows a lot of air and oil thru the valve cover breathers ( real mess) ; Obviously something's wrong,
Everything was new, my builder says he cut the first ring to. 024 and the second to. 028, flat top forged Icon pistons, Hellfire rings.
Any toughs?
Thanks in advance

You didn't state which rings you were using, but the old rule of thumb was for every inch of bore, the ring gap would be .004". A four inch bore would be .016" ring gap. A .024" ring gap would work for a six inch bore engine "back in the day". Just throwing this out there, food for thought.

Edit: I don't know the Hellfire brand, but I know Total Seals are different.

Russ.