New guy here with a question.

[Rctreadaway]

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?
Posted via Mobile Device

[67basketcase]

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

[LockDoc]

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

LockDoc

[Madtat]

its where you put your weeeeeeeeeeeeeeeeeeeeeeeed.

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

[Rctreadaway]

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.





Posted via Mobile Device
Posted via Mobile Device

[GASoline71]

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

[Steeveedee]

Originally Posted by GASoline71

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

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.

[buckskins4ever]

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

[Rctreadaway]

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.
Posted via Mobile Device

[daves72C10D]

Welcome. Glad to see more NC folks.

[tommys72]

Originally Posted by daves72C10D

Welcome. Glad to see more NC folks.

Yep, lets get a few more on road
Posted via Mobile Device

[GASoline71]

Originally Posted by Rctreadaway

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.
Posted via Mobile Device

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

[Rctreadaway]

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
Posted via Mobile Device

[ERASER5]

Originally Posted by GASoline71

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

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