W5 heads

Killer6 said

"Mullen & Co.", lol, Bob Mullen. Flowing at 3"H2O is a low hurdle, not to mention at only one depression, & one direction. Mopar tagged SB heads "W", & B/RB stuff "Stage", the B/RB W2 'copy' flopped....I would love to see a modern testing & analysis on them if they still exist.
Edit: AFAIK those heads never recieved any designation, the ports were oval but low, & they were working with stk. 2.08" valves as a starting point.

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So Mullen cast the head too? (I said 'some portion') Also, back around 1992 I was paging thru some old pics at Koffel's and saw a big block head with unique ports and chamber which was designated with a "W" moniker...e.g.-Weslake. The engineering team at Mopar was one of, if not the first to develop flow bench testing and back then everyone was learning. Somewhere around 20 years ago some of the greatest head porters got away from using the flow bench.