That's not too high. I am not sure if you are using a carb and electronic ign, but if ya are I would consider doing the hei module swap and a true 12 volt coil for hotter spark!
84 D150 440/727 79 /6 swb D150 1964 A100 window van. Just because it has spark plug tubes doesn't mean it's a Hemi.
If ya haven't been there, ya just wouldn't understand.
