Are the 56 exhaust manifolds date coded? If they are, what would the approximate date for a car assembled mid-May 57? TIA.
Thanks, Roscoe. And thanks to everyone with input!First design engine or second design engine? I don't know about first design. Won't speculate. If it is second design, they will likely have no date code. The first date coded second design manifolds started in April so there is a slight chance it had an April date code. However, the date codes are on the inboard side and unreadable when the engine is assembled.
Look right above the yellow Parts on Ebay blocks.....Here is the header of the forum that you posted in:I haven't posted on the Corvette Forum.
In '56 they were the same on Corvette and passenger cars with the Super Power Pack option.