Thanks for the quick replys. Its been 1200 miles since the rebuild. Its using about a quart in 200 miles and it doesn't smoke anytime. I would love to say that its the valve guides but these are freshly rebuilt by the same shop that did my Big Block heads. If it was valve guides wouldn't it smoke horribly? How would I get the rings to seat if they haven't already? It seems after 1200 miles they would be but, eh, maybe not! As for the plugs, they are all golden brown. I used this head/intake combo when it was a 350 and no problems. Here is what I've been thinkin, maybe crankcase pressure. Is that a possiblity? Its leaking in small weird places. For instance, the first leak was a the seal around the harmonic balancer. I replaced it and thats fine. Then is started to leak around the bolts on the fuel pump. I got that sealed up. Then it started to leak out the breather in the valve cover and PCV. I replaced the PCV and haven't driven it since. Kinda frustrated at this point! Its been sitting for two days and there isn't any oil under the old girl. Where is it going? I feel like the engine has a personal vendeta against me. I hope all this extra info will help you guys, help me. I'm baffled and have never had this problem before. I've built plenty of motors and this one takes the cake. FYI I'm gonna do a compression test on the cylinders today. Wish me luck.
