Quote:
Originally Posted by mgarblik
Thank you for clearing that up. My information came from an old GM film that showed the build process of Pontiac engines at the plant. I was almost sure I was watching the final dynamic balance being performed on rotating engines and just small amounts of finish balance material being removed externally. I remember thinking that was really bizarre as that would sort of marry the flywheel to the crankshaft which would be wrong. How in the world did they drill cast iron counterweights on an assembled engine without leaving metal in the engine? Amazing!
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This may be the film?
9.45 into it they describe the balancing of the assembled block.
https://www.youtube.com/watch?v=9LuXf6gJ-jg