SGlez10
68 Barracuda
I have a 1970 340. What castings numbers will fit on my engine? LH & RH
340 exhaust manifold
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67Dart273
Well-Known Member
It's not what fits the engine, it's what fits the BODY. And there are certain heads that have smog fittings etc, but those can be plugged and modified to fit. "I believe" you would not want 340 manifolds on small port 273 heads, either.
SGlez10
68 Barracuda
Ok I had no idea. I’ve seen long lists of what exhaust manifolds fit on 340’s and they categorize based on years but I thought they meant engine. I guess it’s body
Both. You can fit the wrong manifolds in the right chassis.
The 68 - 70 stock 340 manifolds are the best for flow...
2863549 and 2863553 are factory #'s.
LA Engine Exhaust Manifold Casting Numbers
Engine Year Remarks Casting Number
273-318 1965-68 Left 2475719
273 1964-66 Dart & Barracuda / Right 1739599
273 1964-66 Dart & Barracuda / Left 2465857
273-318 1967-68 Dart & Barracuda / Right 2465769
273-318 1967-68 Dart & Barracuda / Left 2780945
318 1967-68 Charger / Right 2465769
318 1967-68 Charger / Left 2475719
318 1968-69 Barracuda / Right 2843953
318 1968-69 Barracuda / Left 2475719
318 1968-69 Dart / Right 2843953
318 1968-69 Dart / Left 2951123
318 1970-73 Right 2843953
318 1970-73 Left 2475719
318 1972-73 Dart / Right 2843953
318 1972-73 Dart / Left 3614395
340 1969-70 Barracuda / Right 2863549
340 1969-70 Barracuda / Left 3418623
340 1970 Challenger / Right 2863549
340 1970 Challenger / Left 3418623
340 1969-70 Dart / Right 2863549
340 1969-70 Dart / Left 3614368
340 1971-72 Right 3148623
340 1971-72 Left 3418621
340 1971-73 Dart / Right 3418623
340 1971-73 Dart / Left 3614395
Engine Year Remarks Casting Number
273-318 1965-68 Left 2475719
273 1964-66 Dart & Barracuda / Right 1739599
273 1964-66 Dart & Barracuda / Left 2465857
273-318 1967-68 Dart & Barracuda / Right 2465769
273-318 1967-68 Dart & Barracuda / Left 2780945
318 1967-68 Charger / Right 2465769
318 1967-68 Charger / Left 2475719
318 1968-69 Barracuda / Right 2843953
318 1968-69 Barracuda / Left 2475719
318 1968-69 Dart / Right 2843953
318 1968-69 Dart / Left 2951123
318 1970-73 Right 2843953
318 1970-73 Left 2475719
318 1972-73 Dart / Right 2843953
318 1972-73 Dart / Left 3614395
340 1969-70 Barracuda / Right 2863549
340 1969-70 Barracuda / Left 3418623
340 1970 Challenger / Right 2863549
340 1970 Challenger / Left 3418623
340 1969-70 Dart / Right 2863549
340 1969-70 Dart / Left 3614368
340 1971-72 Right 3148623
340 1971-72 Left 3418621
340 1971-73 Dart / Right 3418623
340 1971-73 Dart / Left 3614395
MOPAROFFICIAL
Oogliboogli
Yep, he would need to make 1/8th " plate to bolt to the head that would seal the bottom of the port to the manifold or it would leak BAD.
I have a passenger side 71 340 exhaust manifold on my 66 273 head and it does not leak. I also have 73 340 exhaust manifolds on my son's 73 Dart 318, but that has plugged smog bosses, that does not leak. Headers are another story, but I always run manifolds, so no big deal for me.
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The difference from the fancy and expensive 68-70 and the others isn't worth the money IMO. There is basically no difference on a 350hp build.
That list is very wrong.
There is a list I corrected on the site somewhere. It includes body type. Here you go...
Exhaust Manifold Casting #'s - CORRECTED 340 #'s
I've run the good 68-70 340 manifolds on the 318 in one of my 1970 Darts for 30 years with no leak problems...
To me it is more a matter of what car you have and if you want to just buy an exhaust system. The 340 exhaust was pretty good and there are companies that make a good fitting system off the shelf.
These are the ones I have on my 71 Dart that were on the car when I bought it. I've always done longtube headers on my cars but with this car and my mild of an engine it seems the juice is not worth the squeeze for me.
SGlez10
68 Barracuda
Just so we’re clear, you’re saying the stock exhaust manifolds are what you chose bc they’re less expensive and just as good?
I bought the car with the exhaust manifolds already on. My research here suggests for a basically stock car longtubes aren’t worth the expense or headaches. But I’ve always been a fan of longtime headers.
SGlez10
68 Barracuda
Got it
furrystump
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Headers will add power, the more serious effort the more power. That being said headers have some issues like they take up a bunch of room making it harder to work on. Cheap ones leak and rust. You can get some respectable power using the manifolds. My best is 11.79 117 with 68 340 manifolds.
You got that right.
I believe any 68-76 A body manifolds for a 340/360 will work. The drivers side has a very noticeable shape needed to clear the steering.
I used 72 340 manifolds on my 69 cuda with a 360, as they were much cheaper ($200) as opposed to the 68-70 which go for $5-600.
I believe that the drivers side exhaust head pipes are the same from 68-73. The passenger sides are different because the exhaust manifolds are different shapes.
I used 72 340 manifolds on my 69 cuda with a 360, as they were much cheaper ($200) as opposed to the 68-70 which go for $5-600.
I believe that the drivers side exhaust head pipes are the same from 68-73. The passenger sides are different because the exhaust manifolds are different shapes.
Hello, all,
I'm looking to put a 340 from an e-body into a 73 swinger. Will the high-flow exhaust manifolds that came on the original 70 Challenger 340 fit without hitting anything or creating a problem with running the pipes? Passenger side # 2863549 Driver side # is unknown but it looks just like # 3614368 on photo.
Are you referring to a picture in this thread for the drivers side? I only see two passenger side.
Can you post a picture of what you have?
celticwarlock
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This is a photo of the motor & 340 manifold that JOTDB73 is referring to. The part is a Year One component and doesn't have a casting number.
It looks pretty much identical to casting # 3614368, but any subtle differences could be problematic.
It looks pretty much identical to casting # 3614368, but any subtle differences could be problematic.
celticwarlock
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Can anyone verify that they are, in fact, the same?
The repop manifolds are direct replacements for 68-70 340 manifolds for an A-body
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