Got my restored carb, need to figure out vacuum connections 318 w/ac

[manycj]

I just got my restored carb from Scott Smith (Harms Auto) this weekend. Looks awesome don't you think ?

Now it's time to install it on my 1970  Challenger 318 A/C.  I need to figure out the vacuum connections since the original lines were gone and the setup was changed when I got the car.

The third picture is what it looked like before I started. No connections for the breather or the A/C vacuum controls.  No vacuum tree on the intake either. Just a nipple.

The last picture I stole from GYC. It's from a 72 318 Charger w/ac. I suspect it should be the same as mine but without the solenoid valve on the left.

Ignoring the solenoid, should my lines look like the GYC carb? and what plugs where ?  Dist and breather at the T-fitting on the right side of the carb ?  AC plugs into the the T-Fitting on the PCV line ? 

Assistance please
Chris

[Cuda Cody]

I don't have any experience with those carbs, but man it looks good! 

[303 Mopar]

That carb looks beautiful!!  Makes me want to get the 2bbl on my Sport Satty rebuilt.  It's not an A/C car and it is a b-body, but I have a couple of pics that may help you.  I can also go out to the car and take more if you tell me what you need.

[manycj]

That carb looks beautiful!!  Makes me want to get the 2bbl on my Sport Satty rebuilt.  It's not an A/C car and it is a b-body, but I have a couple of pics that may help you.  I can also go out to the car and take more if you tell me what you need.

thanks, but it has to be an AC car. I need the AC vacuum port connections and the breather connections.

[ScottSmith_Harms]

First of all, thank you for your business, I appreciate it!

On your connections, I must admit, I dont have a lot of knowledge on the port connections for your particular car, they were all plugged off with rubber nipples when it got test run. The hoses you see are all of the same ones it arrived here with (when the GYC carb arrived here they were all still attached exactly like you see in the finished photo you posted). They all appeared to be the factory originals as did the solenoid thats atrached so I plated the solenoid and  cleaned the hoses and replace it all per my "before" reference photos when the carb was done.

I would refer you to the factory service manual for more info. it will probably help.

[Burdar]

The small one on the back side should go to the air cleaner.  I assume your air cleaner has the vacuum pod that controls the heat stove flap.

The one sticking out the passengers side should go to the vacuum advance can on the distributor.

My 73 has a port on the very front directly under the fuel line inlet.  Does yours have one there?  On my 73, that goes to the EGR valve.  Maybe 70's don't use an EGR?

[70/6chall]

Manycj, I pulled up a couple of illustrations from the Dodge service manual 1970 Challenger Dart, vol.2, pgs, 14-23 and 14-24, hope they can help. I have the same bbd carter carb on my six cylinder. It's part of the Super Six set-up. Your carb looks great.   Thanks,   Al

[70/6chall]

Here is the 2bbl BBD from the Dodge, 1973 chassis service manual. Maybe you'll be able to pick up some more info from this illustration.   Thanks,   Al

[manycj]

I think I got it now.  Based on the service manual, the small port at the rear is for the breather, the large one at the rear is for the PCV and the one on the side is for the distributor.  Pretty obvious once you see the illustration (thanks Al).  For the AC connection, there are a couple pages in David Wise's book about intake vacuum fittings.  He has a table of fitting part numbers vs engine size and options. As extra confirmation the last two digits of the part number appears on line 4 of my broadcast sheet. In my case its 55, which is a single port for the AC connection.

thanks for the replies.
Chris

[7E-Bodies]

@ScottSmith_Harms I know this is an older thread, but I'm wondering if you'd like a shot at restoring a very clean, factory Carter that's on my 70 440 Challenger project. 64,000 miles, sat indoors for a combined 30 years. Shoot me a personal message if so.

Kevin

[ScottSmith_Harms]

Absolutely! Send it whenever you are ready. Please include a note inside with your full name, address, email, and phone number, and be sure to pack it well, shipping can wreak havoc.  Thanks! Scott

[BIGSHCLUNK]

Looks great. had many a small block back in the day w that carter (or similar). Damp weather nightmares is my biggest recollection. Hopefully there not like that anymore

[70 Challenger Lover]

That carb does look beautiful! I have my 2 barrel Rochester from my 71 318 out getting restored now. I'm even going up one jet size to fatten it up.

On mine, I hooked up the vacuum advance so that the distributor got vacuum at idle and at higher cruising rpms. (It only had vacuum advance at highway speeds before). Doing so increased timing at idle and raised the idle speed so I adjusted it down to compensate. The engine loved all the extra timing and there was a massive power increase. No chance of pinging being a low CR engine. It wouldn't spin the tires before and no it does easily. Can't wait to see what the increase in jet size does.

The factory set the 318s up for lean emissions but you don't have to. You can recover a bit of that lost power.