Carburetor for 1978 Chrysler New Yorker with 400 engine
- Thread starter Fred A
- Start date
Can the EGR be deleted both on lean burn and non lean burn?
Can the EGR be deleted both on lean burn and non lean burn?
The ONLY, repeat O N L Y, way to get rid of the Lean Burn equipment is to REPLACE THE SYSTEM, either by re-calibrating the TQuad (as was mentioned previously) or completely replacing the existing carburetor with a NEW carburetor . . . AND replace the existing Lean Burn distributor with an earlier model year (pre-1975) distributor (with appropriate changes to the vehicle wiring to the earlier model year) . . . plus an air cleaner without the Lean Burn computer on it.
The distributor needs to be changed as there is NO advance mechanism in the LB distributor, as there is in a normal distributor. The advance was all handled by the Combustion Computer on the side of the air cleaner.
The experiences of others in here who have done this is all laid out in prior posts. Including detailed parts lists, also.
The complete Electronic Lean Burn system was a SYSTEM, change one part of it and other parts need to be changed or modified, too.
Regards,
CBODY67
My 77 NYB has a 400 in it. The lean burn is completely removed and I have an edelbrock 650 carb with electric choke, and a pertronix distributor and electronic ignition. The car runs great, way better than with the Carter TQ carb. My lean burn was non-functional when I bought the car.
Did you delete the EGR?
Just Carbs
Well-Known Member
These GM HEI distributors work well in the Mopar big and small blocks. And, they accept the 7-degree while cranking retard module. All service parts are at the auto store up the street.
I am not sure how you are interpreting what I said above to reach your conclusion.
I am recommending you replace the lean burn carburetor with an Edelbrock AVS2 of 650 CFM and pull the "Lean Burn" computer off the car and replace it with an earlier distributor, like 70 or 71 model years for a 383 cu. in. application that @halifaxhops would have. Take the "Lean Burn Computer" and smash it and put it in the trash. You would need to make sure you have an intake manifold that would accomodate an AVS2 carburetor and deal with any rewiring as needed to accomodate the distributor and removal of the Lean Burn Computer. Like I said, the Lean Burn computer only controlled spark advance which made the car run badly in itself with little power and terrible fuel consumption, so you want to just get rid of that computer.
The AVS2 carburetor does not have a port on it to operate an EGR valve, as far as I recall so you can just leave the EGR valve in place with no hose connected to it or remove it and place a steel cover/gasket over the opening and seal it up or just use an intake manifold from and earlier 1970-71 model that won't have a provision for an EGR valve and would also allow you to just bolt up an AVSII with no adaptor needed to go from lean burn carburetor to an AVS2. That is what I would do.
It will work with an AVS2 but you would leave half the benefits of converting to the AVS2 carburetor behind. The computer only controls the spark timing/advance and nothing else. Taking off the computer and replacing it with a distributor is way better so just get a competent guy with some electrical wiring knowledge to wire up a regular distributor with good amounts of spark advance available that would be governed by the distributor you would replace the lean burn computer with. You would also need to replace the intake manifold to bolt on an AVS2 carburetor.
Get someone competent to help you if you are not experienced with this kind of changeover and you will enjoy the car immensely more - night and day better. Things done by half are never the way to go IMO. The formals can be nice cars overall as they are quiet and ride well going down the highway and exude some opulence when the overall package is done right under the hood and you will pay for these changes in terms of fuel savings over time. Go the whole 9 yards.
What is the difference between the Eldelbrock 1916 vs 1906? Can you old air cleaner?
Hello Fred
As mentioned above you do not need to run the EGR off the Eddy Carb unless your state requires emission testing in which case that's a whole different conversation I believe. (Being from the free state of Alberta Canada we do not have such regulations lol) The big difference between the 1906 Eddy and the 1916 Eddy is the style of Annualr discharge of fuel. The 1906 is the old style which basically drips fuel into the Venturi's while the 1916 uses an Atomizer style which creates a mist of fuel into the venturi's which is more efficient. The AVS2 carbs are an advancement over the older model and I find better response and operation with them. Either will work for your application so it is just a preference. In regards to your original air cleaner it is likely that it will fit if your 400 was an original 4 barrel lean burn carb. I don't recall whether you answered that question however if you remove the lean burn unit you will have to block the opening in the air cleaner to maintain integrity of the airflow. Best just leave the Leanburn unit attached but unplugged if you do not have an older style air cleaner to use.
marty koirtyohann
Well-Known Member
u cant buy a new one u can get a ellembrock but unles u have the same carb on the car now the transmition dowmn shift will np b rght & IT may not shift right try they do great work
Is the distributor hard to remove and install? Looks there is a air conditioner line that runs on top?
Does the old carb have electric choke?
Was the distributor hard to take out seems like there is a air condition hose over it? Can you send pics on what looks like with conversion?
Run looks like a "authorized" kit from MP. PM me I have everything you need curved right.
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