Wrong Air Breather

[gyxffyg]

Hi guys.....I have a 73 SSP with the high performance 400 that I recently picked up. I am certain it has the wrong air breather as it has a single snorkel and should have the dual snorkel. Ever since I got this car, couple months or so ago, it is extremely cold natured. So this afternoon I took the breather off and cranked it. And although it is still somewhat cold natured, it is not nearly as bad as with the breather on the carb. So it occurred to me that since the previous owner swapped out the air breather, that the vacuum lines for the two flaps on the breather may not be hooked up correctly. I do believe this breather is either a 340 or 360 breather but I can't say for sure. Can anyone tell me how the vacuum lines should run for one of these breathers? Below is a couple of pictures of the current vacuum line connections.

Thanks

 

[kiwigtx]

Have a look at this site;

http://www.nicksgarage.com/aircleaner.htm

 

[gdrill]

I believe that is 72 340. Kinda desirable to the guy with the right car.

 

[idrivemopar]

Also came on some early 73 Roadrunner 340's, mine doesn't have the flap, it was a late build, but I have a friend with a November 72 built roadrunner that has one with the flap. If you ever switch it out and want to sell it keep me in mind, would love to own that one.

 

[gyxffyg]

So what is happening is the vacuum line from the carb is pulling vacuum but when it is connected to the air breather it is like that part is stopped up. When I disconnect it from the breather the engine starts to idle smoothly and when I connect it to the breather it idles rough and shakes badly. So I have bypassed the temp sensor. Will retest shortly.

 

[idrivemopar]

Sounds like vacuum leak in either the temp sensor or the door diaphragm. It should be closed at idle, and open under throttle to let more air in.