I have a tech question about a motor i built. It is a pontiac 400 bored 030 over keith black single eyebrow pistons, eagle h rods, comp cam magnum .480 lift cam, comp cam roller rockers, 670 heads w/mild port work, edelbrock performer rpm intake, holley 770 street avenger carb. The problem i have is when i attach the pcv valve to the carb pcv port , the car burns oil like crazy. So I thought maybe i was getting blow by because the rings are'nt seated yet. Did a compression check and all was fine. I then welded a short nipple on the underneith of the air cleaner plate and attached the pcv hose there. Now i get oil blow by out the rear crank seal due to high crankcase pressure. The engine now has about 1500 miles on it with no change. Iam at a loss and would appreciate any info you may have.