He really did not do much to the carbs as STOCK, (per the Holley Specification Manual)
1-1/4" Primary Venturis, and 1-5/16" Secondary Venturis, and the Normal 1-11/16"
Throttle Plates in all 4 spots.
He might have pointed out the "750 base plates" but those base plates were all all 650 to 800 cfm Double Pumper Carbs and and also just about every 750/780 cfm Holley carb. A couple of oddball Ford Carbs used a different baseplate and different sized throttle plates.
So a lot of smoke and mirrors but not much different from a stock 660 carb (if at all different). The mechanical opening linkage and the center squirter 4 tip nozzle is the main difference along with the 50cc (5cc per stroke) accelerator pump.
Tom V
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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