I have a friend that has a 780 Holley taken off of a new 1968 396/375 Camaro 4 speed car back in the day. He is going to sell once he determines the ball park price.
Here's a link to one that sold for $600 back in 2012 on the Yenko forum. https://www.yenko.net/forum/showthread.php?t=118948 And new ones for $699. I know that's not the same as NOS or close to it, but an idea. https://www.camarocentral.com/1969_Holley_4346_Carburetor_780_CFM_for_396_427_p/enc-844.htm
I looked at the super cars site and you must be a paid member to put something in their classified section. Anyone here that is also a member there who could link this thread so I can connect them with the carb’s owner? The owner says $800.00 plus shipping. I will move this to parts for sale leads.
This. carb may also be correct for some 68 427 applications. Perhaps Impala or COPOs used this one also.
Sorry Mike. I just saw this. I will on you the contact information so he can send you the pictures. The guy that bought the car new is still living locally but with the sale of his 66 427 vette is out of the old car hobby.