Not Ranked
This is personal opinion - and is gonna sound harsh - but I fix those carbs with a 1/2 inch wrench. They are mechanical secondary but without a rear accelerator pump. when I worked at Holley in the mid-80s-90s the engineering guys referred to those as "flamethrowers". They just open up too much throttle area without the necessary added fuel.
You'll be a LOT better off even with a couple of generic 600 vac secondary carbs.
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Survival Motorsports
"I can do that....."
Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP
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