I have a whooping noise coming through my filter tubing sounding like exhaust manifold leak like a blown gasket sometimes it will stop now my oil pressure is dropping down to 0 after my oil get warm but he engine doesn't knock

Maybe an exhaust manifold gasket blown or worn out.

You could have a leaking water pump or blown head gasket

Rocker cover gasket must be leaking. Sometimes just tightening the cover bolts will stop it. Otherwise replace the gaskets.

as the noise is not described, a suggestion to check the exhaust manifold , gasket or flex section of the exhaust pipe to manifold may be in order
the flex section has a habit of cracking under the stainless steel braiding

Check the antifreeze, if it looks like chocolate milk you have a blown head gasket and the oil is leaking into the cooling ports.
If you have smoke coming from your exhaust, your head gasket or lifter seals are blown and letting oil into the cylinder.
Check your tailpipe for oil residual
jack your car up and look under the engine for any leaks.
Check the oil drain plug gasket
Check the oil filter. Sometimes when removing an old filter the rubber o-ring seal sticks onto the engine, and when your install the new filter the doubled up o-ring will leak.

Take it back and have the heads redone. Sounds like they left oil seals out or they didn't find a crack in the other head. It is very unusuall for oil to come from the exhaust and not smoke. And if the oil is coming from the exhaust gasket ,then the mechanic also didn't do his job right. This gasket should be tight, no air or anyhting else should be coming from between the engine and exhaust manifold. The never timed it is impossible, as it has to be timed to run. I would probably take it to anoher shop, explain what has gone on, get an estimate to fix it. And demand the other shop pay for it.

sounds like a blown head gasket

Apperently one of your gaskets has gone bad. Do you hear any exhaust noises, like ticking? I suspect the intake manifold gasket is leaking and the oil is running down to the stud.

There are several areas to check for possible exhaust leaks. i will list them below.

1. Exhaust manifold gaskets - This will be the most common area. There is a gasket that separates the block from the exhaust manifold. these gaskets can fail, thus, causing a exhaust leak at the manifold.

2. Lower manifold gasket(donut gasket) - This will be a possible leak spot as well. This small circular gasket is placed in between the upper exhaust pie and the lower side of the manifold. It basically separates the pipe from the exhaust manifold.

3. Exhaust pipe - The entire pipe can rust overtime, thus, creating small holes along the pipe structure. These holes will cause the exhaust to leak ,thus, filling the vehicle will moderate fumes and causing louder than normal engine sounds during revving.

4. Muffler - This component can also deteriorate to the point that it cannot filter out the noise. It will also cause leaks as well.

You will find the leak in one or all of the areas stated above in the list.

it sounds like you lost the head gasket...