No, Not even close.
yes if the engine and trans. are both Chevy or Buick or Oldsmobile Buick/Oldsmobile and Pontiac will inter change but Chevy has to go with Chevy
No, 350 headers will not fit directly on an Oldsmobile 403 engine. While both engines are part of the GM family, the Oldsmobile 403 has different exhaust port configurations and dimensions compared to the Chevrolet 350. To use 350 headers, you would need specific adapter plates or custom modifications to ensure a proper fit.
No
The headers for a 350 and 305 are the same.
Sounds lean.
yes and no yes in that it can be made to fit no in that a Chevy transmission has a different bolt pattern than Oldsmobile's, Buick's, and Pontiac's. the motor mounts are also probably going to be different. However you can change the motor mounts and there are companies that make adapters to use a Chevy transmission with a Oldsmobile, Buick, or Pontiac engine. I have seen an adapter to use a ford transmission with a Chevy engine.
No
i wiil try to answear your question what 350 engine are you talking about 350 engine for Buick Oldsmobile Chevy and Pontiac will fit.
NO. Not even close.
The frame engine mounts need to be moved and the headers need to swaed with the 350.
We do not know what you are asking / question is. Please ask it again with all detailsThanks.
A bare Chevy 350 engine block weighs about 200 to 250 pounds. When you add in the crankshaft, camshaft, headers, and the intake it is more like 500 to 550 pounds.