68-69 HP-440 manifolds

[casey henson]

Has anyone used HP 440 manifolds on a 75-79 B-body ? I am considering a set of these reproductions for my 77

 

[Micah Pohlman]

Has anyone used HP 440 manifolds on a 75-79 B-body ? I am considering a set of these reproductions for my 77

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I don't see why they won't work. It sure looks like the exits are just about the same as the stock manifolds, that's usually the important part. It is possible that the drivers side might get closer to the brake master cylinder than original but if you put in a 79 style (it's smaller) you'd be fine for sure.

 

[casey henson]

This is my current manifold on drivers side. It measures 2-1/8 ID

 

[dodge1972]

Recommend installing a late model mini-starter. Its about 1/2 the size of the original unit. I'm also planning to install a 69 set on a 75 Cordoba. Do not anticipate a problem because the 75 400 model k-frame and drive line are the same as a 73/74 big block b body. Several members have original 69 type manifolds for sale at about $400. Just do a search for big block exhaust manifolds. A found a pair a year ago and again about 6 months ago.

 

[dodge1972]

I assume you have a stock single exhaust system. Are you planning to install 2-1/4 or 2-1/2 dual exhaust system to the bumper? You know your gas tank will not support a dual exhaust system. For duals you need a smaller gas tank. One from a 74 will fit. Rock Auto has the best prices, also you may need differ hangers to mount the tank. X-pipe or cross-over exhaust will also fit your Cordoba. I have a 3" x-pipe exhaust in my 75 Cordoba with side exhaust. Planning to replace the fuel cell and run it out the rear.

 

[Micah Pohlman]

I assume you have a stock single exhaust system. Are you planning to install 2-1/4 or 2-1/2 dual exhaust system to the bumper? You know your gas tank will not support a dual exhaust system. For duals you need a smaller gas tank. One from a 74 will fit. Rock Auto has the best prices, also you may need differ hangers to mount the tank. X-pipe or cross-over exhaust will also fit your Cordoba. I have a 3" x-pipe exhaust in my 75 Cordoba with side exhaust. Planning to replace the fuel cell and run it out the rear.

Duals can be easily installed in a non-dual car. There is not as much room on the one side of the tank, so the pipes can be directly under the frame rails on both sides. I have duals on 3 cars that came from the factory with single exhaust, works and looks fine. I have 2 1/2 on my Fury and that's way too big. Makes for some tight clearances and might be on the edge of harming exhaust scavenging, don't forget it's only 4 cylinders going through that one pipe.

 

[casey henson]

Thank you that is good info. I will do a gas tank conversion first just to make things easier. Looks like that small tank is pretty easy to get new

 

[Mr C]

Did the early manifolds work okay on the 77? Curious.

 

[casey henson]

Did the early manifolds work okay on the 77? Curious.

I have not moved on this yet. I have been working on others things. Going to be big $$$ . not only do i have to get manifolds but many other parts. the manifolds,tti exhaust system $$,smaller gas tank conversion.

 

[casey henson]

I had a good long conversation with TTI yesterday. Long story short. I am about to talk myself into buying full size headers. I called to ask about the shorties but they told me if you have a short deck motor you would have to run that super high dollar mini starter that someone makes. They recommended the 1 7/8 full length for a short deck b body.

 

[mr. b]

my buddy had those manifolds on his Cordoba with a 400 worked perfect also the exhaust shop ran tail pipes out to the bumper with a stock gas tank looks good

 

[casey henson]

my buddy had those manifolds on his Cordoba with a 400 worked perfect also the exhaust shop ran tail pipes out to the bumper with a stock gas tank looks good

Is he using the year one HP manifolds or factory HP manifolds ?

 

[mr. b]

they are factory 69 hp manifolds they came off of a 69 GTX

 

[casey henson]

they are factory 69 hp manifolds they came off of a 69 GTX

great to hear. Thank you !

 

[m79ded]

I sure did the exact same ones for over 20 years, worked great and I went with headers for more power, I should have kept manifolds so much better

 

[monaco66coupe]

My Cordoba is the 400 High performance model, with factory dual exhaust. it has been converted to the 69 exhaust system. But the manifolds on my car resemble very closely, if not the same as the 73 HP manifolds. There was no trouble Installing the system. I can't see how headers will help a 7.9:1 compression engine though. It will however make a great deal more heat under that hood. I still think about Installing a 68 335HP 383 sitting on the pallet in the garage. Now that would really make the Cordoba a nice driving car.

 

[DodgeBoy5150]

Has anyone used HP 440 manifolds on a 75-79 B-body ? I am considering a set of these reproductions for my 77

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I was considering this same swap!
Also wanted to do the tti exhaust--after looking over everything involved with installation and pricing I came to the same conclusion that the full length headers and exhaust might be the best way to go!
I really don't want to change my "MASSIVE" fuel tank either--so I am very interested if the duals will fit with it

 

[70 Birdman]

great to hear. Thank you !

I'm wondering if these same HP manifolds will work on a74 440 that's in a 70 b body RR

 

[casey henson]

I used 71 and up HP manifolds. They fit perfect. I am sure they would work on any 68-79 b body car. You would need the correct head pipe to match.