Search results for query: 340 manifolds

Looking at possibly putting a set of 2.02 X heads on my 72 340 . It is bone stock cast crank low compression factory cast iron intake factory exhaust manifolds 600 Edelbrock factory torque converter 904 auto I recently put a set of 3:73 gears in it . Just curious if I will feel any HP gains...

Not true, you had to spec it through Offenhauser.

I am looking for a nice set of exhaust manifolds for a '69 Dart with a 340. If you know of any please contact me. Thanks.

Good find. I run some 340 manifolds on my R/T heads and had to get adapter cut like mentioned in that post. Some of what it comes down to is how the heads were cast. When I was putting my motor together, a buddy of mine had a set of Magnum heads on the bench and the material around the port...

Dated 07-31-68. Outstanding condition. Located in central Texas.

But that passenger side exhaust pipe still looks too close to the torsion bar to me. Unfortunately, I no longer am running the early 340 manifolds (TTI headers now), so can't say for sure. Might just be that the pipe is bent incorrectly.

that's subjective. conclusive tests have shown that 340 manifolds are perfectly cromulent pieces for mild and warmed over builds with no real appreciable loss of HP or TQ in those applications. if fit, ease of install and price are concern 340 manifolds are a great choice. because you...

In my opinion, the '72 & '73 340 manifold is a 360 manifold of the same era. Later the 360 manifolds had the smog ports.

In the near future I plan on swapping out 273 for 340. Exhaust will be upgraded eventually, but in the meantime for breakin can I use the factory 273 manifolds on the 340? Foresee any issues? Thanks Steve

Not mine somebody selling

That's what I bolted into my fairly stock 340 build (9.75:1 compression, stock manifolds, Eddy intake and AVS 650 carb, 3.55 4 speed). I've run it on the test stand...not much of a lope but sounds good. I'm sure I could get more out of the engine but that wasn't the point. If I recall...

I can't read the numbers clearly but if you can list them I will look them up for you.

The TTI head pipes are mandrel bent right off the 340 manifolds no pinch. They flow like giant over sized sewer pipes. TTI routes the head pipes differently depending on auto vs 4 spd. But either way a full 2 1/2 and no exhaust flow choking pinch. Dynomax Ultra Flo mufflers are straight...

Didn’t the dart sport 360s get 340 manifolds?

The 69-70 manifolds are better than the 71+ manifolds. The passenger side 71+ exhaust manifold is less than 2 inches at its exit point.

Hello everyone, I have a 1966 plymouth barracuda that came with a 273 automatic two barrel. I did a recent build on a 340 and rebuilt my 18 spline automatic as well. I need to go into detail about everthing i did so you can help me with my question so you know what i got. I built this motor to...

Yep, that’s what I have.

I will be running 68-70 factory hipo manifolds. 2.5" Thanks Steve

Like I've said before. Stick that 340 in an A-body with stock manifolds and exhaust pipes that need to clear torsion bars and the center link and see how much hp loss there is.

You young Bucs need to quit smoking that CLEAR. It is melting your brain. Headers are always an improvement over stock manifolds. I never lost a race against a car with stock manifolds and one of my early A-body 340 Duster s had flattened 2 pipes on drivers side and I still blew the doors off...

Wow those look amazing! And far less hassle. The only thing I might have a little concern with is loss in horse power. I am building a nitrous motor. I went with a scat rotating assembly, 3.58" stroke crank all forged steal rods and crank , and forged aluminum "icon" pistons. I'm building this...

Looked like 340 manifolds

To the original poster: Go old school, and just do some bolt on's. Day 2 ****. Look closely at this stock bottem end 318. Sneaky little teen, could put the smack down if your not ready. Wait a minute...HiPo 340 exhaust manifolds on a 318 ? :)

...and chamber. I installed 318 manifolds on my 340 when I first installed it in my van. I was not impressed with the motor change at first. Next week I installed headers, not 340 manifolds, What a big difference. I just read your comment again and maybe on a 318, but not a 340, sorry for the...

I have for sale one set of exhaust manifolds. One side has 2863549 stamped with a date code of 0248. The other side has no stamping. There are no cracks/repairs. No heat riser.

Well, I don’t know about that, I’m just putting it out there in case somebody wants them. No issues with the car, took it to HP Engines and had it stroked and got these back from Hollis.

Yes, that's the problem at the bottom of the port with stock replacement magnum heads. The 340 manifolds are a large LA port and the magnums are a small port head. I made some 16 gauge block off plates like Dion R made and they leak slightly around both sides of the plate. it's not much...

For all you guys running HP manifolds on their 340, wanted to know which of two filters to buy. The HP manifold and head pipe clearance is why I'm asking this question. Do not have head pipes to help me make the decision. May be a stupid question but here goes. 1968 340 application states...

This was a pretty good episode. Nick took a stock 1972 340 and did a mild build on it. Stock was 8.5:1 compression and now it has 9.8:1. Some mild porting of the stock heads and intake valves are now 2.02 vs the stock 1.88. Stock cast iron intake, stock thermoquad carburetor. Unfortunately the...

All 340/360 4 barrel manifolds are very good. Take it to someone who can weld cast iron and get an estimate first, then you can make a good decision. For me that would probably be too much, but I have had exhaust manifolds welded with at least 40 years of service and still holding up fine.