Love this forum. 1966 ddddart with leaning tower of power. In process of converting it over to a 2BBL super six system. I have all the parts (almost),
I just rebuilt the original Carter BBD that came from that era (late 70's). Got the air handler with the cool blue sticker intact. Got the intake and exhaust and linkages. Missing the throttle spring return bracket.

So my question is on the exhaust. My current system is original 1 7/8 exhaust.

The new exhaust manifold appears to measure ID 2 inches. Not 2 1/4 like I read about in the articles. I am not sure I want to replace the entire exhaust system at this point, so I have few options: Keep original exhaust mani , just replace intake with Super Six style. Or replace intake/exhaust manifolds and hook it upto my current exhaust. 2 going to 1 7/8? Is that a problem?

_________________
66 dodge dart 270, 225ci, 3.7l, L6

There is no such thing as a "Super Six exhaust manifold." The manifold used with the Super Six was the same manifold used with single barrel carbs.

The 2 1/4 inch refers to the inner pipe diameter of the exhaust pipe. The 2 1/4 inches is the pipe diameter until the inlet of the muffler. After that, an factory installations the pipe dropped to 2 inches, and might or might to have also had a resonator.

If you are doing a single exhaust, then I recommend following the factory recipe: 2 1/4 inches to the muffler, 2 inches after.

FYI, the original exhaust on my factory 79 Super Six Volare wagon was 2 inch diameter from front to rear. Apparently not every super six got the bigger pipes.

_________________
-MattMan
LEANED & MEAN

Interesting. I thought the exhaust manifold was different than stock? It does have a vacuum pod thingy that my stock one doesn't have. If it is the same as my stock one, than there is really no reason for me to swap it out. I suppose that when I remove the intake manifold, the exhaust manifold is also going to come out? man those are heavy, there must be some tricks to keep it all in place? without breaking fingers?

_________________
66 dodge dart 270, 225ci, 3.7l, L6

Please post pictures of the "vacuum pod thingy" attached to your exhaust manifold.

E!G!R?????


Please post pics...sounds like it's a late manifold with an EGR attached....

But the EGR is on the intake......

Right on all counts. The vacuum pod thingy is on the intake. It appears the only diff between orig exhaust and the supersix is the big round weight that controls the exhaust flapper. Everything else looks the same.

_________________
66 dodge dart 270, 225ci, 3.7l, L6

You exhaust manifold unless swapped out early in life should not have the larger stiffening ribs on the runners....

Kind of figured on the EGR that you hadn't thought of the octopus as two separate manifolds...

Take a closer look at the choke pocket.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

bingo, that is it. The exhaust mani for Super Six is indeed different than the stock. It has the thermostat pocket in a different location in order to accomodate the sideways carb. So looks like I will be replacing the whole thing. I wonder, what is best choice for new gaskets? Even though the ones on there are only about 4 months old. Guys talk about these Graphite ones that crush 50%? Worth it?

_________________
66 dodge dart 270, 225ci, 3.7l, L6

Make life easy on yourself, use the № 1232 Electric choke kit, which will bolt to either type of exhaust manifold and work correctly. The later-type manifold (with round heat riser) is less likely to have a stuck heat riser valve.

It is very much worth your while to get the good gaskets for the manifolds-to-head and intake-to-exhaust junctions.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

X2 what Dan said. Those electric choke kits are well worth upgrading to and the Remflex gaskets are unparalleled in their ability to seal uneven surfaces, especially the exhaust manifold to pipe flange union.

Great tips guys. I have on order the Remflex 6008 set. I took a straight edge to exhaust main, noticed that the 2 outer edges stick out a little bit more than the inner connections.
My question now: I have read that EGR blocking plate can be used. Does this pertain to me? There are also a $#!+ ton of vacuum connections on the Carte4 2bbl carb, not sure where they all go, one has a capped nipple on it already? Is there a good diagram showing how all those get hooked up to the air cleaner ports? Thanks guys. getting close.
Got the v8 pedal assembly, minus the pedal. now on the hunt for a pedal and I wont pay $55 for a repro

_________________
66 dodge dart 270, 225ci, 3.7l, L6