boost under engine load? could be the rocker cover breathers if its not hooked up to a catch can... check that the pcv valve connected to the back of the inlet manifold is closing properly otherwise boost pressure will push oil out the other breather on the exhaust side and go stright into the intake. also adjust the ilde via the idle control valve if it still has one, otherwise just adjust the grub screw on the throttle body to bump up the revs. your looking for around 750 with stock cams