THe vacuum for the secondary diaphragm comes through passages that are ported from the venturies. I blew those passages out with carb cleaner when I had the diaphragm housing off the carb. Again, the secondaries move freely by hand when I have the throttle open so I don't think its a clearance issue. I am sure the secondaries aren't opening at any point when the engine is running. The carb has an electric governor. THe previous owner had disconnected the wiring from the governor and actually removed it so I wouldn't even know where to wire it up. I read that the only thing the governor would do is actully close the secondaries to limit rpms. I don't think it would have anything to so with actually opening them. Just in case I left the arm of the mechanical part of the governor disconnected from the piece that would control the secondaries so it cannot physically interfere with the secondaries now no matter what. The only part I forgot to check is the there could be a bad seal between the vacuum diphragm housing and the carb itself. To check that I need to get some rubber hose on the tips of a needle nose piers, press the hoses with the pliers over the vacuum passages inside the venturies, then press up on the vacuum diaphragm rod and see if it leaks between the diaphragm housing and the carb.
As to the edelbrock carbs, the performer is actually a Carter AFB. I just happen to look on CL a bit ago and see a guy who has two edelbrock performer 1407's. THose are manual choke and vacuum secondaries and 750 cfm's. Probably work fine on this application. Anyways one is still NIB and the other came off his 54 ford. He said it looks new and was working fine but his son swapped it for a fuel injection kit. I'm snagging the pair for $300. That's less than the price of one new so score for me.I'll still check to see if that little gasket is bad. If I can't get it working on the Holley I'll swap on the Edelbrock. If I don't end up using the Edelbrock that's okay because its a good deal and I'm sure I can get into something that I can use it on soon.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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