What is this vacuum port/fitting for??

[4spdragtop]

This nipple has 2 different sized nippled(poor thing). Its located in the intake manifold on dads 273 right in front of the distributor. Any ideas where the lines go....

Thanks
4spdragtop

[67Dart273]

Brake booster, small one is stuff like AC/ heater controls if used

[Howard1784]

Brake booster

[4spdragtop]

Dads car is an ac car, but has standard brakes??

[RustyRatRod]

It's for anything that needs manifold vacuum. Plug um if you don't need um but don't lose sleep over um. lol

[TrailBeast]

Yep.
I thought it looked small for a booster.

[Coronet 500]

Don't attach PCV as you don't want all that going into one cylinder.

[TrailBeast]

PCV should go to the base of the carb on the back if that's an edelbrock with the plugged port that can be removed.
My brake booster is connected to that port since I have power.
No smog laws here so I just have crankcase vents without the PCV.

Originally Posted by Coronet 500

Don't attach PCV as you don't want all that going into one cylinder.

[bobscuda67]

It supplies vacuum to the AC heeater controls. The nipples are to small for a brake booster.

[Bad Sport]

Steve, I didn't look at that carb to see if the plug is in the back. If you don't have the power brakes make sure that plug is there before you attempt to start it. It will be right in the center on the back side at the base of the carb.

Looks like you're making progress all painted and such. How about a pic of the whole engine.

[4spdragtop]

Hey thanks Bob and Badsport...yep got the plug in there buddy. Check the thread in a few minutes, doing an update to it now
http://www.forabodiesonly.com/mopar/...47#post1822547

[4spdragtop]

Originally Posted by TrailBeast

PCV should go to the base of the carb on the back if that's an edelbrock with the plugged port that can be removed.
My brake booster is connected to that port since I have power.
No smog laws here so I just have crankcase vents without the PCV.

Hey Trail, in my pic the PCV hose should is connected to the large front middle port, I believe thats where it should be. No pwr brakes, but it does have disc

[Rocky_JS]

the small port is for the dash vacuum gauge

[4spdragtop]

Originally Posted by Rocky_JS

the small port is for the dash vacuum gauge

Just plug it then John, as it has factory tach...

[Rocky_JS]

yes, just cap it off. are you going to be re-installing the a/c? if not just remove the fitting and plug it off. I put a standard heater box in mine the outer motor bracket is just a touch bigger than the a/c motor hole.

[4spdragtop]

Originally Posted by Rocky_JS

yes, just cap it off. are you going to be re-installing the a/c? if not just remove the fitting and plug it off. I put a standard heater box in mine the outer motor bracket is just a touch bigger than the a/c motor hole.

We were going to do a "cosmetic" hook up on the ac/(just for looks)....I will run it by dad and see what he wants to do.

Thanks again!!

[TrailBeast]

That is the best hookup on that carb/intake point for a PCV and no power brakes.

Nice.

Originally Posted by 4spdragtop

Hey Trail, in my pic the PCV hose should is connected to the large front middle port, I believe thats where it should be. No pwr brakes, but it does have disc

[65Val]

Steve...in your pic, you have your dist vac. connected to full-time, manifold vacuum. Move it to the other side of the big vac hose. That is ported, timed vacuum.

[Rocky_JS]

Originally Posted by 65Val

Steve...in your pic, you have your dist vac. connected to full-time, manifold vacuum. Move it to the other side of the big vac hose. That is ported, timed vacuum.

good eye!