swirl port heads exhaust leak

[Snappy]

My duster, 318 with swirl port heads has a leak from what seems like a bolt hole below #3 under the manifold. There are two holes side by side but only the one below #3 and the same thing on #4 on the other head. There no threads in the hole and I don't have a clue, any suggestions. BTW they are not 302's like a 975 I believe, they were already on the car with the manifolds laying loose when I bought it. Any ideas guys, thanks

 

[toolmanmike]

302 casting number heads have AIR ports below the exhaust ports of the heads. They need to be tapped out and filled with pipe plugs. I will look for the thread here. tmm

 

[toolmanmike]

Here you go............http://www.forabodiesonly.com/mopar/showthread.php?t=203442&highlight=302+heads

 

[Snappy]

That's exactly what it looks like thanks. rayer: