Dragonus18

I just got another block built as my first one overheated and took a $#@%. Anyways. Today when I had it running after driving it from work I see a little smoke. I did rev it a little but nothing higher than 4k rpms which was recommended to not go over. I saw a little smoke but very lightly colored coming out from behind the front head lights. The engine only has 87 miles on it and I was wondering was this normal for this to happen on a new engine block? Anyones help would greatly relieve me of a ton of stress!!!