B3422w5 is talking about (The Mystery) Bloomer head, a modified aluminum unit that I know not of where it came from against anyone else’s head. The head doesn’t have off set rockers. So any off set rocker head is disqualified.
what dont you know? Its a Chinese casting that was developed by a very sharp head guy to make max power without an offset rocker that will accept production bolts ons.
Its not a mystery head at all. A poster on here or two has them already, and i have seen a car local to me run them during drag week. Nothing mystery about them at all.