1967 273 Intake Question

Sorry all. My post #12 got a bit confusing. The 4bbl manifold (771) is not installed. the 2bbl (559) is installed and has carb and all hoses run.

cuda dad said

I looked up and found this to be the California Emissions manifold

Click to expand...

Any idea what year it is IE casting date etc?

My 4bbl (771) is a 66 casting. and my 2bbl (559) should be late 66 to early 67 as I have no reason to believe that it is not the OE manifold