5.9magnum questions
I'm running a set of the MP R/T Magnum heads on my Duster with Hi-Po manifolds. I had to cut a set of 16 or 14 gauge adapters as there wasn't enough meat around the port to seal the exhaust manifolds. I laid a set of early exhaust manifold gaskets on a set of production Magnum heads and it looked like those would have sealed fine, but Mopar saw fit to save some weight and left less material around the exhaust ports on the R/T heads. The problem was on the bottom where the face of the port didn't come down quite far enough.
On a standard head, the Hi-Po manifolds would probably work just fine.
Here's a picture of the center ports:
I'm running a set of the MP R/T Magnum heads on my Duster with Hi-Po manifolds. I had to cut a set of 16 or 14 gauge adapters as there wasn't enough meat around the port to seal the exhaust manifolds. I laid a set of early exhaust manifold gaskets on a set of production Magnum heads and it looked like those would have sealed fine, but Mopar saw fit to save some weight and left less material around the exhaust ports on the R/T heads. The problem was on the bottom where the face of the port didn't come down quite far enough.
On a standard head, the Hi-Po manifolds would probably work just fine.
Here's a picture of the center ports:
