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#1
05-17-2021, 07:00 PM
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Factory machining
I just for the second time watched the video titled 455 casting and machining in production of 1970 and I was very impressed by a fact that I missed the first time watching it,
Pontiac during production did a ruff balance of the crank and then once the short block was assembled they spun it up to do the final balance. This was done to a tolerance of 1/2 ounce which is to me amazing since the average balance job done by a machine shop is 3 once , Does anyone know what the other GM divisions did and used in there balancing jobs?
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