i need some help finding out where the intake manifold vacuum tube fitting goes to and also there is another small stainleess tube going down behind the motor that sticks up in the back directly behind the motor even with the air cleaner, i think it goes to the air cleaner but not sure, any help greatly appeciated as the intake vacuum tube on my hemi engine is just plugged off.

The vacuum fitting will depend on the car it's going in.. Like, a Charger may have more nipples..

These are some pictures I have for reference for my '68 Hemi Charger...

Another. From am unrestored '69 Hemi Charger R/T.

troy thanks, that works for my 69 hemi roadrunner but your 1st picture shows the back of your 68 motor and you have that intake manifold fitting not hooked up yet, where does that one go, the 69 hemi question is solved but now i need help with my 68 hemi roadrunner.

69 hemi cars came with those, hooks up to your vacuum lines, i have one on my 69 hemi roadrunner, i am looking for info now on my 68 hemi roadrunner, where the vacuum fitting on back of the intake goes to.

Is it a california emmisions thing as I have not seen other 68/69 hemi cars with it?

That green thing is part of the NOX system.

That small steel tube behind the motor connects with a short vacuum type hose to the nipple on the bottom rear of the air cleaner base. It supplies clean air for the choke down to the exhaust manifold to get heated before it comes back up to the choke housing on the carb.
If you have power brakes, the large vacuum fitting on the manifold fitting goes to the booster. There is a smaller vacuum nipple also that goes to that green cannister like the picture here in an earlier post on the '69.
If, like most, the green cannnister has been removed, just be sure that small nipple on the manifold fitting is plugged and use the ported vacuum on the rear carb for distributor vacuum.
My late '68 Roadrunner came with the green cannister, but it had been removed before I bought the car in '76. It has the large and small nipple manifold fitting and the original vacuum lines that used to connect the cannister were still in place.
Oh, and I'd love to find an original cannister for my car!

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i need some help finding out where the intake manifold vacuum tube fitting goes to and also there is another small stainleess tube going down behind the motor that sticks up in the back directly behind the motor even with the air cleaner, i think it goes to the air cleaner but not sure, any help greatly appeciated as the intake vacuum tube on my hemi engine is just plugged off.

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THAT helps with the air cleaner issue for the 68 hemi car but still need info help on intake manifold nipple fitting on the back of the intake nanifold, where does that one go?

vacuum line from the distributor i believe goes to the front port on the carburetor.

I was trying to picture where it went, if it's to a port on the rear carb. Then the mainfold gets a plug.

The green valve was also used on the '68 Hemi, both standard and automatic.

It has three nipples, one goes to manifold vacuum, one to the rear carb timed port and the other to the distributor. In normal operation the valve lets the vacuum advance work as usual but under the high vacuum of deceleration it routes full manifold vacuum to the distributor. Full advance during deceleration helps clean up emissions.

Here's one on my old '68 Hemi RR.

does anyone know how late the green emissions cannister was used on 68 model hemis, i am prety sure the early 68 hemis did not have them

The green vacuum advance canister was part of the Cleaner Air Package for California cars; my '69 383 4-speed Calif Roadrunner had one, as did my '68 Charger 383 4-speed CA car. I don't remember it on my '68 383 auto Roadrunner that was bought new in Denver.

If you don't have power brakes block off the vaccume port on the intake..

The green valve is just what John kunkel said.....it changes the timing on deceleration in high vacum mode by giving full vacum to the vacum advance on decell. Normal driving it gives normal vacum advance. It is called a CAP valve. Some dist around the 1969 and 1970 era also had a little box on the side of the vacum advance with a wire to it. That would retard the timing during cranking and I believe some would also retard the timing anytime it was at normal idle speed. Ron