After checking the Edelbrock site, It doesn't look like this is a cam of their's. I guess I'll keep the B303 and use it. Tom In a message dated 10/25/2010 11:55:51 A.M. Central Daylight Time, Gyroplanes at aol.com writes: (on engine teardown, I found the engine has what appears to be a Edelbrock 2121 cam (per end markings)