Exhaust Manifold Tube Setup- Choke 426 Hemi

[Dean Prevolos]

I know that the top tube runs from the choke to the top of the exhaust header.

I want to know how to connect the second line that runs from the bottom of the exhaust header up to the carburetor. I have a photo (green circle) showing the top of the second tube that has a black rubber hose showing. Where does that hose connect to? I have attached a photo of the back of my engine.

I found the attached photo online but I can't find anything in my service manual for the connection. Any help is appreciated.

 

[wish4hemi]

Anything here that helps?
https://moparconnectionmagazine.com...nstalling-a-hemi-heat-control-valve-assembly/

 

[AR67GTX]

There's a small nipple on the bottom of the air cleaner pan it connects to. Sort of a pain to deal with. It draws filtered air from air cleaner through tube in exhaust manifold and then up to the choke housing.

 

[Dean Prevolos]

There's a small nipple on the bottom of the air cleaner pan it connects to. Sort of a pain to deal with. It draws filtered air from air cleaner through tube in exhaust manifold and then up to the choke housing.

Thank you, I will take a look for that nipple.

 

[Dean Prevolos]

Anything here that helps?
https://moparconnectionmagazine.com...nstalling-a-hemi-heat-control-valve-assembly/

Excellent information, thank you.

 

[Dean Prevolos]

By the way, I removed the plugs (see photo) you see on the rear of my intake manifold, which is the way the engine was when I purchased the car. Evidently the last owner plugged and removed the choke assembly. I guess with the hot weather in South Forida, he figured he didn't need it. I am restoring to original specs which is why I am buying the parts and re-attaching to my engine. Thanks for the two replys, very helpful and now I can complete the installtion.

 

[Dean Prevolos]

Finally have the heat tubes installed and the tube to the choke and air cleaner. Install the engine this Saturday.

 

[383man]

Many cars had a small port on the carb airhorn near the back that the choke exh heat hose went to also as other brands were like that alot since they used the choke housing on the carb much more then Mopar. But as was said it just pulls clean air from after it went through the air filter and then goes down that tube then through the exh manifold and up the other tube to pull hot air into the choke housing. Very nice Hemi you are doing. Ron

 

[Dean Prevolos]

Many cars had a small port on the carb airhorn near the back that the choke exh heat hose went to also as other brands were like that alot since they used the choke housing on the carb much more then Mopar. But as was said it just pulls clean air from after it went through the air filter and then goes down that tube then through the exh manifold and up the other tube to pull hot air into the choke housing. Very nice Hemi you are doing. Ron

Thank you Ron, appreciate your comments.

 

[Dean Prevolos]

The engine went into the car last weekend.

 

[AR67GTX]

Dropped in from the top or insert from the bottom? I helped a friend install his Hemi and trans from underneath in a Roadrunner and it was a real ordeal due to the width.

 

[Dean Prevolos]

Thanks for asking.

I had to drop in from the top. That was not my original plan though. I had a stand on rollers made to the specs I found on this forum. What I didn't calculate correctly was the height of my engine lift was the same as the wheels on the stand. I couldn't get the engine into a postion to lower onto the stand. I rebuilt my complete front end on the stand and then tried to lower the engine onto the K member. I was then planning to install the transmission and roll under the car. So I just went ahead and dropped it on but it wasn't an easy job. I found that the engine did not want to sit level on the engine mounts. It took a lot of effort with another buddy to get it in.

 

[383man]

I did a 383 in my Dart from underneath but being a shop foreman at the time at a Dodge dealer I did it on a lift in the shop. I sat the K-frame and eng on Jack stands and lowered the car down on it.
But if you ever go to Moshers site who do 62 to 65 Mopars and the 68 Hemi cars they have these brackets they made that bolts to the front of the car after the bumper is removed. Then they lift the car with the eng hoist and have the eng and K-frame on a rolling cradle and roll it under the front and then lower the car back down. Looks like a pretty good idea that works good for them. Ron

 

[Dean Prevolos]

Ron, I have seen a video on You Tube with a guy using that type of application. I had planned to do the same. Too late now, I am sure I woun't be building another Hemi car at my age(68). This is the last one I will ever build. Can't wait ti get it running.

 

[AR67GTX]

We used an engine hoist on a 69 Hemi roadrunner to raise it and slide the Hemi, k-member and transmission in from underneath. It went but there probably wasn’t an inch of clearance at the shock towers. His carriage wasn’t designed properly to support the back of the transmission and it was a real struggle getting it on the same tilt as the body and the k-member bolts in. I think it would have worked OK if the car had been level on a hoist but instead - but still close clearances.

 

[Dean Prevolos]

I had to remove the driver side exhaust manifold to get the engine into the bay. It wouldn't clear the steering box and column. I knew how difficult it would be if I tried to re-install the steering column AFTER I put the engine in, which is the reason why I installed the steering column to the steering box before I put the engine in from the top. Did you have the steering column in the Roadrunner when you installed the engine and trans from underneath?

 

[AR67GTX]

Trying to remember but pretty sure the steering column was not in - no way it would have cleared. I believe the starter was on the engine as were the exhaust manifolds. He had the battery tray installed and I had him remove it as it literally had only about 1/4” of clearance to the valve cover. Over the sorting out period a lot of that stuff had to come off later anyway - the starter was bad - the exhaust manifold bolts loosened and blew out a gasket. He was smart to put a hydraulic roller cam in it - at least he hasn’t had to pull a valve cover because he does have PB. Hemi maintenance takes some patience.

 

[69hemibeep]

I have seen the heat tubes blocked because the bottom of the intake rotted out causing exhaust flow into the crankcase. Be careful

 

[Dean Prevolos]

That's interesting point on the heat tubes. I also removed my battery tray before we put the engine back in and I had my new starter on the engine. Prior to this, I had restored my engine bay by removing everything, removing all the grease and grime of 50 years, primed and painted it. Then I rewired, installed new brake booster, master, all the small components, restored the wiper motor. Hopefully, I will get it back on the road by the end of the year, thanks to All Forum members help.

 

[383man]

I have seen the heat tubes blocked because the bottom of the intake rotted out causing exhaust flow into the crankcase. Be careful

Are you talking the choke heat tubes or the exh heat riser valve. I dont see anyway the exh should get to the crankcase if either were clogged ? Ron