Search results for query: 340 manifolds

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  1. 4fortyDemon

    Big Valve X Heads on Low Comp 72 340

    I can tell you that having a bone stock 72 340 4spd 323 peg leg Demon ( had factory T-quad), only had a set of Hooker super comps on it it ran great for a stocker..lol. when I went back to manifolds, it lost a lot of quick rpms, lost the torquey feel and generally felt like a dog . Headers...
  2. Mean416

    Exhaust Manifolds

    If it's gonna be stock and you're ok with leaving 20-40 ft lbs in the table, pretty much everywhere across the power range, then any old stock manifolds will do. Yeah the 340 mans probably make a bit more than the others. The cheap hedman headers are total garbage. The cheap summit branded...
  3. 273

    Sixpack on a 318 engine ?

    Totally agree. If you look at Chev's performance 302/327/350 all built pretty much with the same specs, they made basically the same power curves just at different rpms. And if you geared each engine to be operating in there powerband at any given speed each would be putting down similar hp and...
  4. T-Evil

    [SOLD] 1971 340 Exhaust Manifolds & Full Exhaust

    I have for sale the full exhaust off of my 340 demon. The passenger side manifold is dated 4-15-71, 3418623. The heat riser and flapper is gone. Drivers side manifold #2863553 I sand blasted the manifolds and sealed them with HVT, the HVT could easily be removed if you prefer it raw (pause)...
  5. 65 Cuda 340

    340 crank with 318 harmonic balancer?

    I sold my early 340 manifolds for enough to buy a set of TTI's.
  6. C

    [FOR SALE] 340 Six Pack

    I have a very nice complete six-pack setup for sale. The carbs have been rebuilt, including new diaphragms. The fuel lines and linkage are complete. I have a spring kit for the vacuum pods. I did save all the old components for the carbs that were replaced. This includes the air cleaner...
  7. J

    very mild 360 build.

    the melling MTD cam is going to trade torque all the way across the board for HP at the top. it's still a good cam, that's similar to the factory 340 piece. personally i'd choose the MP cam. the split pattern will work favorably with the exhaust manifolds and the narrow 110 grind will keep the...
  8. JDMopar

    After 35 years back to where i started need exhaust manifold help

    In post #7, the top pic is the same style 318 manifolds as your original pics. The second set in post 7 are B,C,E body small block manifolds. The passenger side will work in an A body, but the drivers side won't. What would work the best are a pair of 72 and up 340/360 exhaust manifolds. Sorry I...
  9. 70duste

    Jay Leno Showing The GTS Dart Some Love

    i have the same car 68 gts 383 4 speed LL1 color and mine has a nice rumble to it with stock manifolds, yes i have flow master mufflers but it sounds great .
  10. 'Mad Max'

    Magnum Exhaust Manifolds in an A Body

    correct, for both the 5.2 and 5.9, which is also the same outlet size as the passenger-side 340 center dump manifold. I just checked and the 318 is 1-3/4" outlet...but a 318 is not a huge engine.... 318 above, 340 below - Still tho...I really wonder how much that tiny difference will...
  11. Mtrhead

    [Found!] 727 Big Block Transmission with converter.

    Too bad I'm in SC...I got a 727 with cheetah Rev shift pattern valve body ...with deep alum pan with cooling fins...has converter around 3000 stall...looking for 68-70 hi-po 340 manifolds
  12. DionR

    Magnum Exhaust Manifolds in an A Body

    Be aware that some Magnum heads don't have enough material around the port to seal a 340 exhaust manifold. Not all, but my R/T heads and some OEM heads I have seen can be a problem. https://www.forabodiesonly.com/mopar/threads/340-exhaust-manifolds.437577/#post-1972547765
  13. AJ/FormS

    Manifolds

    273 manifolds work on the 2bbl, small valve heads, and they choke about the same time or a lil before the 2bbl cam does. The 340 logs work with the big-port heads and the 4bbls, but they kill the overlap on the 340 cam. They say, that headers allow the 340 cam to come alive, which can add quite...
  14. mcodecuda

    Should I buy this 440?

    At first I was skeptical about gaining 20hp on a ‘73 2-barrel 318 until I remembered that back in 1973 a friend of mine had a ‘73 340 Duster automatic and I had a ‘73 Dodge Sport 318 2-barrel 4 speed. I added dual exhaust to my car and put lighter advance springs in the distributor and it seemed...
  15. cudamark

    After 35 years back to where i started need exhaust manifold help

    ...you have the big port 340/360 type heads, get a set of 340/360 A-body stock exhaust manifolds if this is just a street car. The '68-70 340 manifolds have the best flow, but, are also the most expensive to buy. The '71-6 ones work fine too, just a bit worse on flow. Some of the '75-6 castings...
  16. 1MeanA

    exhaust pipe diameter for a mildly modified 340

    I've always run 2 1/2" with manifolds or headers (street cars). I just received my TTI 2 1/2 system for my 340 Swinger. When I look at the size of the pipes (except where they smashed it to fit around the starter) I can't believe this wouldn't be more than adequate for any small block up to...
  17. ir3333

    exhaust pipe diameter for a mildly modified 340

    Yup, when the time comes i'll install them.The complete exhaust came off a 340 Dart with the same ...549, and ...553 manifolds that i will use. The previous owner/friend restored a show quality numbers matching 69 340 4speed convertible. I think there may only have been about 50 of those cars...
  18. A56

    Header Interference?

    and that's why I'm retaining my factory 340 '69 cast iron manifolds when I go to the MP 1.14's
  19. 340six

    I have fallen and I cant get up

    Thanks, I can see it is bent some but no where close to mine. But is is not a straight up.
  20. 340six

    Exhaust Manifolds

    No I have a real car, you have me mixed up with a guy called Dan. I also have a,set of mint costed 68-71 340 manifolds from my Challenger. I ran them on my De-Tuned 340. As I pulled the big cam, springs, high stall, and put better street gears so my wife coukd have A/C and go anywhere. Had...
  21. badlilred79

    [SOLD] 68 to 70 340 exhaust manifold set

    I have a second set of 340 exhaust manifolds no repairs Nice condition 650 plus the ride in Crossville Tennessee
  22. D

    Exhaust Manifolds

    That's awesome
  23. C2ndLTpigeon

    340 Intake manifold recommendations

    Looking for some recommendations on a good performing intake manifold for my 340. Here are my specs. 71 340 .040 over. Keith Black pistons KB243 Comp Cam 2705 270/270 Duration .468/.468 lift 110 centerline 360 heads 2.02/1.60 Stock crank, stock rods. Hooker headers 904 transmission with...
  24. 3

    [SOLD] 68-70 340 HP manifolds

    For sale one nice used original set of 1968 through 1970 340 HP exhaust manifolds..... Heat riser is there and stuck open..... Little to no pitting on these nice shape....no visible damage anywhere that I see !!!......$800 plus shipping in USA located ny state 12306 zip
  25. toolmanmike

    What type of exhaust does your 273 have??? show some photos!!!

    Nice! And I bet it sounds sweet.
  26. Bodyperson

    Advice needed on manifold repair

    Cmon man, you got to be joking.
  27. J

    Approximate horsepower

    back in october nick's garage dyno'd a 318 stroker, 10.5:1 with the small valve 360/340 heads that had been ported and bigger 2.02 intakes put in (allegedly), comp XE275HL 528 231/237, stock hydro rockers, performer RPM with a 750DP, running thru manifolds hair over 400hp @ 5500 about 440tq @...
  28. Brooks James

    Advice needed on manifold repair

    Got this in a swap lots of cracks Wasn't too interested till I found out it's 68-70 340. Isn't this the best 340 manifold or was the 71 better Looks like someone attempted a jb weld patch on the back of the manifold I have never seen a manifold crack this extensively Not concerned that it...
  29. HankRearden

    school me on a 5.9 magnum motor.

    ive used a couple magnum 5.9s. An LA 360 car pan works. I used an LA timing set. I did use the magnum accessories to get the serp belt set up and higher amperage alternator.I used la headers on magnum heads and magnum headers on la heads. no leaks.
  30. 66fs

    What type of exhaust does your 273 have??? show some photos!!!

    I run the factory style Commando/Charger exhaust on all my 273's from mild to wild, factory exhaust manifolds and all. Combinations ran from stock Commando, to 284 duration solid cam with an Offy intake and Holley carb, to "72" 340 heads and cam with a 71 340 intake and TQ. I am also...
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