ok i have a 94 camaro z28 v8..i noticed i have an oil leak when i drive my car hard i see white smoke coming from behind not from the exhaust but under engine....cant really figure out were the leak is coming frm but its next to the oil pan and its all over the mufflers thats why white smoke is coming out....also after driving it and i turn it of...and turn it right back on it turns on real slow and i hear a noise inside the left valve cover? or possibly a blown spark plug?
any help will be great thanx
by the way this is my first car so dont know much about them

 

Most of our V8 cars leak in the back of the engine where the intake manifold is supposed to seal to the engine. This can leak down and make smoke...Espicially noticable when stpped quickly after a hard run. Usually it will burn off on the exhaust manifolds. You say the underside and mufler are oily. This souns funny since the muffler is way back near the rear bumper. Stay on the problems with help from an enthusist near you. If this is all it is, then it is cheaper to keep adding oil than paying big bucks to fix a design flaw.

There are many other spots that leak and someone familiar with LT1's can identify the problem areas. The hard start can be a dozen things and if it bothers you the best mechanics can diagnose it for you after checking the car.