Not sure on the clutch cars, I would think their add would say.
By the way, CFM's and dual quads........ I was talking today to a guy (his family races at our track) and he just got his freshened 340 back from one of my favorite machine shops, and they dyno tuned it. His dual quad has a pair of 750 Holley Double pumpers on top (340 CI :eek:). You know, all those guys that think "you are forcing" too much into the engine... LOL 550 hp on the dyno.