still not sure if 305 or 350

[cyberpine]

I have every reason to believe my engine the original 305.. But my mechanic keeps insisting that not the original engine on the truck and thinks it might be a 350.

I can't seem to find the stamp. The only stamp I see on the engine is this one.



Other pictures to the truck.
http://picasaweb.google.com/cyberpine/1987C10#

Right now it runs way strong, but seems to stall or flood going from 0 to 20. They've changed the TBI gasket and sealed any air intake leaks. changed the Gas pump and filter. He wants to pull the intake and TB.