Over the winter I put new heads (aluminum) with a comp 503 cam and stealth intake manifold. After several weeks of oil leaking from what was thought the intake, it is leaking from the passenger side head (by where the oil pump kicks oil up). I have MLS gaskets and wondering if anyone had this problem.

 

Pressurized oil doesn't go through the head gasket anywhere.

 

You sure it's not the valve cover gasket or the rear manifold end seal?

 

Yea I Checked those already and replaces manifold (Three times). It was leaking from the heads to the block because my block has some damage to the corners from normal wear. I had MLS gaskets on it and it didnt seal right. Sucks took it all apart again

 

Surface finish for MLS gaskets has to be fine. Any deep cuts or imperfections will create a leak. Some users paint the MLS gaskets with copper coat or equivilent gasket sealer before install. This is not recommended by any of the MLS manufacturers and may affect the intended performance of the gaskets.