Chevrolet 305 CI Engine Build - Mission 305, Part II
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4. On the flip side, we can see where Turbo City has drilled the throttle shaft bores and inserted bronze bushings as a hedge against leaks and to provide smoother throttle action (arrows). Also note that the portions of the shaft that lie within the throttle bores have been flattened, lessening airflow resistance even more. View Related Article
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