350 build water outlet question
#1
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so i picked up a new water outlet today from autozone, it has the 2 holes on top which are for a bypass? i have the one fitting from my 305 that fits into one of the holes, what exactly is the other for? i have no block off cap for it. do i need this outlet or should i just pick up one of chrome ones with no bypass outlets
![](http://i79.photobucket.com/albums/j149/pfft84/ee75d85e.jpg)
![](http://i79.photobucket.com/albums/j149/pfft84/ee75d85e.jpg)
![](http://i79.photobucket.com/albums/j149/pfft84/9f68b10e.jpg)
#2
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What you have screwed in there is a thermal vacuum switch. The other hole is sometimes used for the temperature switch (for the computer, not the gauge). Yours might be in the intake manifold, I can't see. If not being used, get a plumbing plug from the hardware store. Don't forget to use teflon tape on both fittings.
#7
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after looking at the old 305 i see the Ported Vacuum Switch off the water outlet goes to the egr and other line im not sure where it goes, but i don't plan on running an egr on the 350, should i just get the closed off water outlet like below
![](http://image.dhgate.com/upload/spider/e/036/111/e_bfvyqj111036_0.jpg)
#9
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I've seen the ears break, and the mating flanges get corroded and wont seal. The one on my 327 continually seeped and it was so corroded I had to replace it, so I went with that adjustable O ring one as shown above.