Well...the book lists the cars with original motors. As you note, the protos (a couple) had pushrods to begin with. Later 550s and 550As all had 4-cams first.
Of course, they could have later raced with pushrods. I think I recall that we note one or two in the race list.
Steve Heinrichs
Of course, they could have later raced with pushrods. I think I recall that we note one or two in the race list.
Steve Heinrichs
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