Didn't one of the Wayne heads employ different timing? Did I read that in the Twelve Port Story?
All of the "Wayne" 12-port heads made for the Chevy 216-235-261 engines by Wayne Horning, Harry Warner, Bob Toros, and the recent Wayne MFG. Co. had the the same valve arrangement as the the stock engines. The 12-port head that Wayne Horning made for the GMC after he and Harry Warner separated did have a different valve arrangement (I-E-I-E-I-E-E-I-E-I-E-I) in an attempt to eliminate hot spots. This, of course, requires a custom camshaft. I believe that this is explained in Part 2 of the 12-Port story in the "Historical' link and in the April 1951 HRM. Pat Swanson also described the various Chevy and GMC 12-port heads at the Denver convention in 2006. Several members brought in examples of most of the heads for "show and tell."
