Here's my dilemma. My son and I are rebuilding a 225 slant six '74 Dart Sport. While separating the manifolds to install the metal gasket included in the engine rebuild kit, several things became apparent. The one stud running through the middle of the manifolds near the carburetor was burned (rusted) through completely and broken off in the exhaust manifold. I suppose I could drill it out and re-tap the threads
We pulled off the EGR valve and couldn't believe our eyes. The openings into the manifold were completely clogged and packed tight with carbon buildup. It couldn't work if it wanted to. Also the entire chamber between the two manifolds was packed solid with crud. Finally, the heat control valve in the exhaust manifold wasn't functioning because the small stop pin which is pressed into the side of the casting and secures the thermostat spring has burned (rusted) away. The whole thing just flaps freely in the breeze. I suppose I could follow the chassis manual instructions for removing the heat control valve and re-drill the stop pin hole.

Let's face it, the whole thing is messed up.
So, here's my choices. I have found in my local scrap yard a couple of options. A seventy-something Duster has a decent looking manifold set (from outside appearances) with the same one-barrel intake ours has. Although, the heat control valve seems to be stuck. Maybe just needs a shot of solvent. The other option is a Super Six setup in a '78 Volare. It has the carburetor (I need some help from someone in identifying the type from its corner tag), all the throttle linkage, and the air cleaner and lid (with the decal intact). The heat control valve seems to be working fine.

First question: What is the significance of the "Super Six" name. Is it just the distinction given when Dodge went to a two-barrel carb, or is there more to it than that?
Second question: Will all the emissions control, vacuum lines, and everything else I don't know anything about all work in this conversion from '78 to '74?
Third question: The Duster's manifold had a block-off plate where the EGR valve should have been. Assuming that mine still works, should I just bolt it back on, or does it actually need it to run properly? I plan to post a separate topic regarding the whole vacuum and emissions thing.

By the way, the Super Six manifold set, carburetor, and all linkage will cost me $65, if that helps in making the choice. Thanks for any input.

Jerry

_________________
There's a difference between ignorance and stupidity.
Ignorance is not knowing any better.
Stupidity is knowing, yet doing it anyway.

There is significant differnce in performance in the Super six set up. And if it helps, a complete Super six set up like you describe usually goes for $150 or more on E-bay.

Hey, if you aren't after a restoration, you'll probably be kicking yourself later if you pass up a chance for performance parts at stock prices. The Super Six is a combination of the different intake and a slightly larger exhaust. You can bolt a Super Six in without bothering with all the emissions stuff or EGR (although EGR may improve your mileage). I would keep the Super Six's charcoal cannister though - there's no performance advantage to dropping it, and just venting the fuel bowl to the atmosphere can get messy.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

Based on the condition of the parts you found, sounds like the Super Six is the way to go.
The price you were quoted is great, just be sure to get everything, especially all the linkage parts and throttle cable.
All the Super Six stuff is different, even the air cleaner, so get the whole set of parts.
DD

From these and other postings I have run across on this site, this is what I understand about the Super Six conversion I am considering.
Items to scavenge from the '78 Volare:

Intake/exhaust manifold set
Air cleaner
Carburetor
Throttle linkage (including cable)
Pedal (because it is different than my '74 Dart)
Charcoal canister

What about the choke control, vacuum amplifier, vacuum delay, and other items that are "plumbed" to it? Would all of mine not work with the Super Six? There is also what appears to be a cold air intake fitting mounted in the driver's side inner fender, but no hose. Would I need to get it and cut it into my Dart and find the hose to fit?

Sounds like I may have run across my first real deal in our slant six experience. Thanks for all the input.

Jerry

_________________
There's a difference between ignorance and stupidity.
Ignorance is not knowing any better.
Stupidity is knowing, yet doing it anyway.

Also get the auto trans kickdown linkage right down to the lever off the transmission.

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Charrlie_S
65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 170 nitrous
64 Valiant Signet
64 Valiant 4dr 170
64 Valiant 4dr 225

The throttle cable and pedal on your '74 should work. I know that they did on my '69 when I did the conversion. Won't hurt to have a spare cable though. You won't need the charcoal canister or vacuum amplifier but will want the choke items. Cold air intake is nice but not necessary.
Bob D