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I bought a Holley 650 a couple of years ago and never took it out of the box. I asked for a Holley 650 double pumper but before it arrived I sold the vehicle it was going on. The part number on the box is 0-80783S, and description of mechanical secondaries and manual choke. My problem is I am...

I was told a vacuum secondary on a manual trans will not work. Is this true. I have a 360 with a A-833 four speed trans and a 650 carb with vacuum secondary and wanted to know if that will be a problem. the last owner said he had a vacuum secondary on it and it had very low vacuum and not...