Hi there. This winter I've decided to finally sit down and learn a bit more about my engine and truck and how everything works. Well, more like it was decided for me when my carburator finally started going out on me. Anyway, I've recently purchased and installed a Weber 34/34 DGEC (a rebuild was not possible with this one), and after a little adjustment of my distributor timing, new spark plugs, wires, and a cap and rotor, it's running pretty good. As soon as possible I'm going to go in and adjust my valves and give it a new head gasket. It's not perfect yet, but it'll get there.

So, with this carb, I unplugged the eight or so vaccuum hoses from the old stock one and only plugged one back in, capping the others (and piping a few differently) There are no emissions laws where I live, and so I'm wondering what I unplugged that is important? Is all of that stuff unneeded for the proper (although unclean) running of my engine? Is any of it?

The EGR system: I heard before that your engine will not run properly if you don't have this hooked up. Is this only in the case of a carburetor that has an EGR port? Can I plug up the pipes going to and from the EGR and the EGR Modulator and forget it's attached to the engine?

The Air Switching Valve (ASV) and resonator: The resonator used to connect to the inner part of the air cleaner. Currently I have it hooked the same on the weber with the engine's breather hose leaking down and out. (Weber's instructions said to put the breater in the air cleaner and didn't mention the resonator's hose.) Should I do this? Or should I put the breather back in the air cleaner and plug up the resonator. Can I remove it all together and remove vaccuum from the ASV?

Vacuum Control Valve (VCV): A little hub of hoses that doesn't appear to have much function anymore. Can I remove it altogether? (This means plugging the ASV)

Charcoal Canisters: I have two. Any use to me anymore? Is it safe to plug the vacuums off. Should these continue running?

What about the vacuum coming out of the distributor that is not the advance line going to the carb?

What about the little switches I didn't mention? The VSV, BVSV, and VTV?