From what i recall from the book "History of the Indy Car", Willie Utzman built this 331 hemi, with 4 valve heads. It made about 330 hp, and good torque, on alcohol. It was campaigned at Indy...don't recall the year......but a broken crank first time out, and was apparently never raced again. I recall the pic, because it's one of the prettiest motors I've ever seen!!