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Join Date: Apr 2011
Location: Cobleskill, NY (In NORTHERN NY)
Re: holley list 3310 #3878261-EH date 8/6/1 ??
This carburetor number was originally listed for the 1965 Z-16 Chevelle (375hp/396), the date will indicate if an original issue Z-16 carb (rare) or the much more common one sold over the parts counter to half of the Chevy enthusiasts in the US. My experience with MANY dyno pulls on a 406 CID SBC was it was hard to improve on as delivered over the counter. There were some small improvements we made after many dyno pulls, but you really ought to have access to a dyno if you decide to alter jetting/air bleeds, etc. When these were right it was tough to find a better 780 cfm carb at the time. I still look for them at swap meets.