Small block Mopar ProMaxx head testing

Resurrecting an old thread are you still happy with the heads? Are they just run on the drag strip? Just wondering about longevity. Did you ever research the valves to see what kind of quality. Thank you.


Sorry I missed this. I didn’t go back and read this whole post but these heads belonged to a friend of mine. He finally put them on a street dart he has but no track times. He said it feels good though.