Understanding Holley 1940 Vacuum Advance

In this detailed video, we delve into the intricacies of the Holley 1940 carburetor's vacuum advance system. Whether you're a seasoned mechanic or a DIY enthusiast, understanding how vacuum advance works is crucial for optimizing engine performance and fuel efficiency.
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[@Z7d3nR4]

Those small brushes look like gas welding tip cleaners.

[@MikesCarburetor]

Well they aren't made for that especially. Don't think the bristles are strong enough for welding tips.