white smoke....and its not the tires

[bmxmon]

hey, i just threw in the 302, and it seems pretty solid. It runs fine now, and I did the 2,000-3,000 rpm 20 minute break in thing. I just noticed that it blows a bit of white smoke out of the exhaust now though, and was wondering what it could be. I retorqued the heads, and will probably do the intake tonight. The engine has about 100 miles on it now. it only blows white when i rev it up. From what i can see, there is no oil in the radiator. I have heard that the rings need to "seat" in, is this it? The motor runs nice and strong, just that there is the white smoke. thanks for any help