Edelbrock heads: Adjustable rockers needed?

While at Carlisle this year I sat in during Herb McCandless' tech talk. One of the things he talked aboug was working with Edelbrock on the initial Mopar small block design. During the dyno tests he specifically ran stock style non adjustable rockers. He said the Edelbrock people were surprised and not entirely happy or understanding but he insisted that they work with stock valvetrains.

Herb was a little upset when Edelbrock later took the design and adapted it to other non-Mopar applications. After the small block heads were out he told them to do big block heads too. He may have "enhanced" the story a bit but that's the gospel according to Mr. 4 Speed two Saturdays ago.