vacuum question

[ridiculously_necessary]

i see the pump is connected to what looks like a splitter. the brakes and something else hook to it. i want to build a super sucker for wvo (40 to 80 gallon air tank) and was wonderting if i could pull vac using the spare ports. or would thats cause problems with the other components requiring vacuum? 40 to 80 gallons of air is a lot to evacuate compared to what its doing now.