Blown hemi pan pressures all over the map.

Hey all,

I've got a roots blown brad block and heads hemi and I'm getting progressively worse pan pressure readings. It will bounce around from 2 to 3 pounds of pressure and then down close to 10 inches of vacuum. I noticed #3 will smoke on start up for just a second or so then clears up for the day.

We decided to scope #3 and saw a little puddle of oil on top of the piston so we pulled the manifold thinking there is a leaky o ring and I see oil on top of the closed intake valve in #5. The left side of the engine seems to have some oil leaking in to the cylinders but the right side is fine looking at the closed intake valves. Oil pressures are good as well, o rings are up and look good not flattened. Any ideas would be great, thanks!

 

If you have heads that have pushrod tubes - look for leaks around the tubes into the intake ports...fill the intake port with solvent and look around the tube where it's glued into the head...