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My mistake on the list number , it is 6210-1, but here is a photo of the carb. And it differs from the 6210 carbs I have found. No transfer tube,center hung floats, dual feed. And it is a spread bore. For some reason I was thinking it is a 800. I have had this thing for years and need to put it on a 454 but if it is a 650 I hate to spend any money working on it.



Its a 650 cfm, It has been modified, looks like they installed pyramid bowls. Here it is in stock form.

http://www.ebay.com/itm/CHEVY-HOLLEY-416...aa0&vxp=mtr

75 Duster, 451 10.87 @ 123.58 NA 97 Z28 6sp., 12.01 @ 115 on a 100 shot 71 Swinger. 360 magnum. 12.58 @ 105 78 cutlass, 469 BBC. 12.70 @ 108 on street tires. http://www.youtube.com/watch?v=Z2kqNmMfheU