I just had my block bored .030 over and rebuilt with new reman GT40P heads, forged pistons, comp stage 2 cam, new ford lifters, scorpion rockers ect... Now it is 2500 miles old and it is still burning about a quart of oil every 200 miles or so. Two plugs were totally shot and covered in oil. (cylinders two and seven) Always smoke on high rpm decell or after full throttle. I pulled the heads off to check everything and I found the lower intake to be loose. I figured that was the issue. I still pulled the heads to clean them and I lapped all valves too. Everything appeared perfect (new seals, good guides, good seat contact pattern, etc...) I put it all back together very meticulously and I still have the same issue. Lots of smoke on a high rpm decell and plugs two and seven oily. I did a compression test too, all within 160-170 psi. I pulled the PCV hose out of the back of the block and plugged it, and went for a quick drive. That did not appear to help. There was what I would consider a lot of blowby coming from the breather on the valve cover (also carried some oil with it) with the PCV hose disconnected. I am really stumped on what exactly is wrong here. Could it still be rings on those two cylinders even though they did ok on a compression test? Any ideas??
Thanks!
Thanks!