I posted a picture of open and closed chamber heads in your other thread. All you have to do is look at the chambers and then you'll know. Open Chamber 75-6 455 heads are good for boat anchors, that's about it.
I posted a picture of open and closed chamber heads in your other thread. All you have to do is look at the chambers and then you'll know. Open Chamber 75-6 455 heads are good for boat anchors, that's about it.