New Yorker 440 Exhaust Questions

Mopar Exhaust Systems

  1. 77newyorker440

    77newyorker440 New Member

    Messages:
    17
    Likes Received:
    5
    Joined:
    Aug 8, 2020
    Location:
    East Coast
    Hello Everyone, its been a while since I have posted on here, I had a few questions for you all.

    I own a 1977 New Yorker Brougham with the 440 and I was wondering if yall had any exhaust suggestions. My plan so far is to put headers on and just do dual straight pipes all the way back or have them come out right before the rear tires, so they don't have to be bent over the axle (Due to cost). Unfortunately, I haven't been able to find headers that fit the New Yorker, except one pair of shorty Sanderson headers that I do not want to use. I am looking for long tube headers, so far I have found these (Hooker 5903HKR Competition Full Length Header, Painted ) Hooker Headers Part NO 5903HKR, but it says the are made for B and E bodies. Could they fit a New Yorker, and do you guys know of any other headers I could use. The reason this is so important is that the stock exhaust manifold it has are run right next to the valve covers and have warped them due to the heat, causing an oil leak. Please add a comment below if you all have any comments, concerns, or suggestions. Also, I just had my 15th birthday, so I'm almost old enough to get my license.

    Thanks,
    77newyorker440
     
    • Like Like x 1
  2. 71Polara383

    71Polara383 Kid with ballcap FCBO Gold Member

    Messages:
    2,754
    Likes Received:
    4503
    Joined:
    Dec 10, 2016
    Location:
    Rockford,IL
    When I was 18 I had a 78 440 New yorker. I put the exhaust out right in front of the rear tire, glass packs and factory manifolds. That car ran well and sounded great.

    Put it out the side. You will love it.

    Don't worry about headers. Replace the gaskets. It much less of a headache.
     
    • Disagree Disagree x 2
    • Like Like x 1
  3. CBODY67

    CBODY67 Senior Member

    Messages:
    4,983
    Likes Received:
    1132
    Joined:
    Mar 27, 2011
    The valve cover leak you describe is most probably due to a degraded gasket rather than "warping" of the cover itself. A somewhat common situation on police 440s, but not on street cars, typically. Chrysler released a pure silicone valve cover gasket for police applications, orange in color, to help combat the rh valve cover side leaks. They are still availabble from other vendors.

    Under what driving conditions do the gaskets become sub-optimal? Long highway drives, or long periods of idling? Perhaps a bit richer carb calibration in those conditions might decrease the heat?

    Remember that long-tube headers, on any vehicle, will have much-increased exposure to road "situations" which can cause dents/bends in them. They can be more trouble than they're worth, I suspect.

    Have you mesured the factory pipes under your car? I suspect you'll discover that the single exhaust system is about 2.5" pipe and muffler outlet diameter. Also, by that model year, the normal exhaust manifolds had an enlarged internal cross-section, compared to the earlier versions. Not as good as the factory HP manifolds, but better than the earlier standard exhaust manifolds.

    Does your car still have the factory fan shroud and a working fan clutch? End result is a good air flow over the engine when it's running.

    In many cases, the rh side manifold will cross with the B/E-body part, or be close enough it can be used on a C-body. BUT the lh side can be where the issues are due to differences in location of steering components and such.

    Check your state's rules about exhaust system "Exit Points".

    Just some thoughts,
    CBODY67
     
    • Thanks! Thanks! x 1
    • Disagree Disagree x 1
  4. 1966newport

    1966newport Well-Known Member

    Messages:
    628
    Likes Received:
    40
    Joined:
    Jan 20, 2012
    i would never pass nys inspection with no cats
     
  5. 75LandYacht

    75LandYacht Yank Tank FCBO Gold Member

    Messages:
    4,225
    Likes Received:
    2160
    Joined:
    Oct 1, 2015
    Location:
    Westchester NY
    Doesn’t require Cats before 1985.. ask me how I know! Lol.. Yonkers NY.

    I took the cat off my 75 and 77 NYB and the car ran a bit better. No cat air pump on them either..
     
  6. lemondana

    lemondana Member

    Messages:
    74
    Likes Received:
    39
    Joined:
    Aug 30, 2011
    Your New Yorker is NOT a race car! Forget the headers, Forget the straight pipes and forget the pipes exiting out of the side-they sound like SHIT!!!!! Listen to a Viper with side exhaust and then listen to one that has rear exits. You be the judge. I worked with a guy that had a 69 Vette 427 that had the factory side exhaust and it sounded like hell. Put dual exhaust on it with big quiet mufflers and put Nitrous on it if you think you need to go fast. The headers, straight pipes and loud side exit exhaust will only get you tickets and trouble! Be smart!
    If you are a city dweller and don't get out on the highway much, get some 3.55 gears for your rearend. That will get your land yacht up to speed quicker than headers will. Get an earlier Thermoquad, get it rebuilt by someone that knows them. You and your friends won't need your big ass stereo, Because you will be listening to that Thermoquad HOWL..
     
    • Agree Agree x 2
    • Disagree Disagree x 2
  7. commando1

    commando1 Old Man With a Hat on the Porch FCBO Gold Member

    Messages:
    34,606
    Likes Received:
    19325
    Joined:
    Mar 10, 2011
    Location:
    FUHOA Reservation, Sebring, Florida
    Groundhog's day. [​IMG]
     
    • Agree Agree x 2
    • Like Like x 1
  8. furious70

    furious70 Well-Known Member

    Messages:
    825
    Likes Received:
    288
    Joined:
    Aug 18, 2018
    Location:
    Chitown
    Side exit or ending at the rear end well greatly increase the noise inside and the reverberation inside fyi.
    Personally don't know which headers fit a formal, but I'm a supporter of them unlike a lot of these grumpy old men :drama::D
     
    • Like Like x 1
    • Agree Agree x 1
  9. Mr C

    Mr C Senior Member

    Messages:
    3,700
    Likes Received:
    1638
    Joined:
    Nov 20, 2012
    Location:
    All over
    I've been through the headers phase (on B bodies in my youth) and the burnt wires, rust out and exhaust leaks that came with them.

    I've been a stock manifold guy since and never had an issue. The most cost effective easy button here is a new set of valve cover gaskets.

    That being said, if you continue down this road...Formals are by and large ignored by the aftermarket so any foray into headers will be somewhat ground breaking...as mentioned you'll probably wind up bashing the hell out of a set of B Body headers to make them work (did mention leaks?).
    I can't remember ever seeing a Formal with headers.

    I think that the TTI Tri-Y look like they stand a good chance of fitting a Formal...but run the duals out the back...you won't be sorry you did.
     
    • Agree Agree x 3
    • Like Like x 1
  10. 77newyorker440

    77newyorker440 New Member

    Messages:
    17
    Likes Received:
    5
    Joined:
    Aug 8, 2020
    Location:
    East Coast
    Thanks CBODY67,
    The car has not gotten many different driving settings so far, since I have only owned it for three months. My dad and I were mostly seeing the oil smoke when the car was idling or had been running for a while. The system has lessened to a degree, since we replaced the water pump, fan clutch (and it does have the factory fan shroud), radiator, hoses, and thermostat after we had an overheating incident which ended with a plume of oil smoke, but now, the engine never runs above the halfway point on the temp gauge. Currently, my dad and I have been cleaning the area before we go on any longer rides (15 minutes or more), in order to reduce the risk of an oil fire. I think you are correct about the gaskets breaking, not the valve covers, I misspoke earlier, but the benefit of headers is that they would not run right next to the valve covers, meaning a longer life for the valve cover gaskets. You are correct though, putting in the headers would be really tough, especially on the driver side with the steering box. I think the car has the 2.5 inch exhaust, but it needs to have new pipes because it all rusted off after the catalytic converter (under the front passenger footwell) which will allow it to pass inspection. I looked into it, and I don't believe my state has any laws on where the exhaust exits the vehicle. Below I put a picture of the valve covers and you can see the darker part that is wet with oil.
    Thanks again for all the suggestions and help,
    77newyorker440

    20200707_175957.jpg
     
    • Thanks! Thanks! x 1
  11. 71Polara383

    71Polara383 Kid with ballcap FCBO Gold Member

    Messages:
    2,754
    Likes Received:
    4503
    Joined:
    Dec 10, 2016
    Location:
    Rockford,IL
    Who said you cant race a new yorker?

    FB_IMG_1533052008086.jpg
     
    • Like Like x 4
    • Agree Agree x 1
  12. Turboomni

    Turboomni Old Man with a Hat

    Messages:
    5,366
    Likes Received:
    2832
    Joined:
    Dec 14, 2015
    Location:
    MA
    MEV races his NewYorker with exhaust manifolds and hit mid to low 12 second 1/4 miles.
     
    • Like Like x 1
  13. Turboomni

    Turboomni Old Man with a Hat

    Messages:
    5,366
    Likes Received:
    2832
    Joined:
    Dec 14, 2015
    Location:
    MA
     
    • Like Like x 1
  14. cantflip

    cantflip Old Jagoff with a Hat FCBO Gold Member

    Messages:
    10,749
    Likes Received:
    5875
    Joined:
    Nov 1, 2015
    Location:
    Orlando, FL
    • Like Like x 2
    • Agree Agree x 1
  15. rapidtrans

    rapidtrans Senior Member FCBO Gold Member

    Messages:
    3,385
    Likes Received:
    1950
    Joined:
    Jun 8, 2016
    Location:
    rochester hills, mi.
    Even with headers a new Camry will smoke it!
     
    • Agree Agree x 1
  16. 71Polara383

    71Polara383 Kid with ballcap FCBO Gold Member

    Messages:
    2,754
    Likes Received:
    4503
    Joined:
    Dec 10, 2016
    Location:
    Rockford,IL
    You old guys are seriously NO FUN.

    I didn't care to be fast. That car was consistently slow. 17.3 over and over and over.

    I did however cut a .003 light in it.
     
    • Like Like x 2
  17. rapidtrans

    rapidtrans Senior Member FCBO Gold Member

    Messages:
    3,385
    Likes Received:
    1950
    Joined:
    Jun 8, 2016
    Location:
    rochester hills, mi.
    Old guys were kids once too.
    We’ve been “there and done that” as you say.
     
    • Thanks! Thanks! x 1
  18. 71Polara383

    71Polara383 Kid with ballcap FCBO Gold Member

    Messages:
    2,754
    Likes Received:
    4503
    Joined:
    Dec 10, 2016
    Location:
    Rockford,IL
    So let the kid build his car to live and learn.

    Out of all the cars I have had...the one my friends talk about the most was that New Yorker.
     
    • Like Like x 1
    • Agree Agree x 1
  19. Turboomni

    Turboomni Old Man with a Hat

    Messages:
    5,366
    Likes Received:
    2832
    Joined:
    Dec 14, 2015
    Location:
    MA
    All I'm saying is you can make good power with exhaust manifolds.
    Have fun kids and I mean it!
     
    • Like Like x 1
    • Agree Agree x 1
    • Disagree Disagree x 1
  20. 77newyorker440

    77newyorker440 New Member

    Messages:
    17
    Likes Received:
    5
    Joined:
    Aug 8, 2020
    Location:
    East Coast
    Here is what the current exhaust note sounds like with the stock exhaust manifolds and the catalytic converter, so my goal is also not to lose this sound:
     
    • Like Like x 1