The guys who ported and polished my intake conveniently broke a prong off my vacuum switch (that 4-pronged piece of plastic that bolts onto the intake manifold). Apparently there are several different part numbers, though they all look the same to me.
The problem though, is that I won't be using a standard Holley 5210 anymore, but a Weber 32/36 DFEV, and I do not know whether or not the vacuum switch is still needed or if I need a different one entirely. Anyone know for sure?
Doesn't the ported vacuum switch run the EGR valve though? I really don't want the car to be anymore polluting than it already is lol. I'm glad that it isn't needed to run the car, so it won't stop the project from moving forward, but I would prefer the EGR valve to do it's job.
The part number on mine was 14050293, I have another broken one that has a different number, and there's several different ones at the local boneyard, one looks like mine but it has yet another different part number (it's on a car with AC, power brakes and steering and automatic). Mine originally was on an automatic with no extra options and we changed it to 5-speed, plugging the vacuum hole for the tranny as we went. Would you know the best switch to run with? Or would any one of them do fine?
Wow, I said PCV, I was thinking EGR... anyway. I wonder how it is connected. If it could be direct plugged that would be one of the three only vacuum accessories, carb and vacuum advance for the ignition being the two others, that you would have to connect. Yes, I found that the EGR valve is a direct vacuum.
Plug it all directly on the vacuum ports and it will work.
I think that the 4 ports valve is to actuate the air diverter above the exhaust manifold and to cut the lock-up in the auto trans. from working.