Intake & heads for Dummies

[Denvermike]

I set my new Eddy perf., non EGR, on to my 360. I noticed something I don't understand. In the center of the heads is a port that I'm pretty sure is a heat cross over of some kind. There is also a "U" shaped port(?) around it. Part of these stickes above the intake manifold. I looked in this area as best I could. It appears to go no where, just down into the head about 3/4".
Help!!!
What the heck it? What does it do?
Head casting numbers are 3671587-9.

Any help would be GREAT!!
Thanks,
Mike


You might feel old if your idea of a road is now going to the Doctors.

 

[RustyRatRod]

No worries. It is a cooling slot to allow air to circulate there. It is on all factory small block heads.

 

[demon seed]

BB heads have the slot also.

 

[Denvermike]

Thanks for the help. I guess it makes sense for cooling? At least the heads and the intake will work.

 

[65Val]

I think it's there to catch small parts, and make them unretrieveable!!!

...other than that, they don't do a darn'd thing!!!