1966 425 corvette #351 casting
 

A very rare item. A 1967 casting block 3904351 with a G16 [July 1 1966 date code. 4 bolt main. It has a 425 HP code and 66 corvette vin !! these are known to be used on the last 427s.It may be one of the last 66 427s I also have a H65 427 cast H25,and has gussets in the front . It is the earliest known 427 casting. It is from serial number 5 or 6 [need to pull it] and may be the first 427 car built. late block is for sale 8000.00 Early block is not for sale.