New guy here with a question.
 

First off I'm going to get pictures up asap! but I'm trying to get my truck running. just dropped in a late 70s model 305 and I'm trying to figure out what screws into the intake manifold on the number 8 runner. it's roughly a half inch hole. any ideas?
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Re: New guy here with a question.
 

Depends on the intake. More than likely a vacuum port for emissions or break booster.

Re: New guy here with a question.
 

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Either a vacuum fitting for power brake booster or a plug.

LockDoc

Re: New guy here with a question.
 

its where you put your weeeeeeeeeeeeeeeeeeeeeeeed.

http://video.search.yahoo.com/search...your+weed&vm=r

Re: New guy here with a question.
 

I'm guessing just a plug then cause I see where the booster hooks up. the one at the junk yard was missing it as well.

http://i224.photobucket.com/albums/d...120_160243.jpg

http://i224.photobucket.com/albums/d...218_202827.jpg

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Re: New guy here with a question.
 

From the factory, that hole is the port where you hook up a vacuum line to the automatic transmission modulator. The brake booster vacuum line usually came out of the rear of the carb.

Gary

Re: New guy here with a question.
 

Yup. You can even see the capped booster vacuum line over where there is no booster. And it comes from the back of the carb. It's a lot of flow when it's in use (say, brakes being pumped, or the booster leaks), and you really don't want it on just one runner.

Re: New guy here with a question.
 

yep thats where you can add on auto trans vacuum or change your brake booster from the carb to there. Depends on clearance.

Re: New guy here with a question.
 

thanks guys! reckon I'll be heading back to the junk yard to see if I can find that fitting since I do have a 350 trans. it's not the prettiest right now but my first priority is getting it safe and drivable and then taking care of aesthetics.
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Re: New guy here with a question.
 

Welcome. Glad to see more NC folks.

Re: New guy here with a question.
 

Yep, lets get a few more on road
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Re: New guy here with a question.
 

Make sure you also get the proper steel vacuum line that runs down to the transmission modulator. The hard line ataches at the intake and the modulator with a couple of short 3" pieces of rubber line. It is held in place by a metal tab that attaches at one of the passenger side bellhousing bolts. If you run a rubber vacuum line all the way from the intake to the modulator, it will more than likely collapse under vacuum and your shifts will be all wonky.

Gary

Re: New guy here with a question.
 

Thanks for pointing that out! it definitely makes sense. I'll keep my eye out for it when I'm scouting for the vacuum fitting
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Re: New guy here with a question.
 

Accurate and technical at the same time!:lol: I believe the matal tag you refered to is a "thingy." :lol: