Update.
The carb is form the 216 and the manifold is from the 235. The carb mount has elongated bolt holes so it fits both.
The block is drilled for hydraulic lifters. Probably Chevy sold a lot of trucks that month and instead of waiting around to build more blocks they just used the passenger car blocks and stamped them with truck numbers. We have all opened up something form a by gone era only to find not what we were expecting.
He pressurized the block and voila...the gasket is no good! He took the head off and ordered a new gasket. It should be ready next week.
Now I don't feel so incompetent that I could not get this to run right.
Looking for a 235 carb now
