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Cam choice is a solid roller, ground by Comp. The 409 cam is the same length as a BBC, but the valve layout is SBC, requiring 409-specific cams. Lamar has his own part number in the Comp catalog, but it's pretty much a blank-lobe profiles are cut for each application. Ask Lamar what the specs are, and he'll tell you, but after a while you'll realize he never really got around to saying, exactly.