4bbl intake for 318

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khaley71

khaley71

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Looking for a good 4bbl intake for a mostly stock 1973 318. The Edelbrock 318 Streetmaster any good? There's one for sale locally, guys asking $115 for it. There's also a 71 340 intake for sale too for few bucks less. Either of these any good or should I look for something else? I have a holley 600 that I plan on using. The motor is stock internally other than double roller timing chain. Has MSD 6AL box and distributor, dual exhaust through manifolds. Thanks a lot in advance gang
 
Of those two the 71 340 intake is by far the better. Snag it.
 
I like the performer 318/360. You can usually find them for under 100 bucks, and they work great on stockish 318s!
 
I like the Performer RPM on mine, only thing not stock in it is the 340 cam.
 
Although the the 340 intake might be better in some applications ,not yours . The Streetmaster 318 offers a better port matchup and will eliminate turbulance from port mismatch possibly causing a low rpm surge. Just my 2 cents
 
Is grab the cast iron intake and not think twice or worry about it.
 
Streetmaster 318

Is Single-Plane Manifold with narrow runners.

For a 'stock' 318, it is a functionally useful Manifold, that will
give you decent performance in your power range.

Specifically designed for the 'low-to-mid' range power band of up
to 4500 RPM's.

Also, the ports will line up well with your 318.

The Edelbrock 318 Streetmaster came thru with a Square-Bore carburetor mount. That would be the choice for the 600 Holley.

Also, it is a sharp looking Aluminum Intake.
--------------------------------------------------------------------------

The 1971 340 Intake, is a great unit. But, it has a Thermoquad Carb mount, and has larger runners........

It would not be my choice for an 'all stock' 318.
 
It's funny that it was the choice of millions of factory 318s right from Chrysler. Same port size and volume. Chrysler knew it was a mismatch and did it anyway. Millions of times. MILLIONS. No one ever complained that they ran bad. I remember when we had 318 and 360 Diplomats in Macon. Those are what ALL the cops wanted. Nobody wanted the chebbie or Ford.

That goofball streetmaster may be "sharp lookin" but it's gonna make his 318 feel soggy.

Sharp lookin. Yeah. Go for that.



69 Cuda 440 said:
Streetmaster 318

Is Single-Plane Manifold with narrow runners.

For a 'stock' 318, it is a functionally useful Manifold, that will
give you decent performance in your power range.

Specifically designed for the 'low-to-mid' range power band of up
to 4500 RPM's.

Also, the ports will line up well with your 318.

The Edelbrock 318 Streetmaster came thru with a Square-Bore carburetor mount. That would be the choice for the 600 Holley.

Also, it is a sharp looking Aluminum Intake.
--------------------------------------------------------------------------

The 1971 340 Intake, is a great unit. But, it has a Thermoquad Carb mount, and has larger runners........

It would not be my choice for an 'all stock' 318.
Click to expand...
 
I've bolted the factory cast intake for a TQ, used the 17 dollar adapter, and they work great!!!! I right now have a Weiand action plus bolted on a 100 % stock 318, and it offers gobs of low end torque, and works well through out the rpm range..... and yep, my ports are mismatched. Of course, you could always take your heads off and open them 318 intake ports to help match the intake, should offer a small benefit, but works great bolted directly
 
318willrun said:
I've bolted the factory cast intake for a TQ, used the 17 dollar adapter, and they work great!!!! I right now have a Weiand action plus bolted on a 100 % stock 318, and it offers gobs of low end torque, and works well through out the rpm range..... and yep, my ports are mismatched. Of course, you could always take your heads off and open them 318 intake ports to help match the intake, should offer a small benefit, but works great bolted directly
Click to expand...

Yup ^^^^^ people been doin it since cave man days and it's worked well.
 
My preference here is the edelbrock ld4b, it's a good well performing dual plane with the 318 sized runners. I ran one on a 77, stock 318 and had a noticeable increase after it went on.
 
69 Cuda 440 said:
Streetmaster 318

Is Single-Plane Manifold with narrow runners.

For a 'stock' 318, it is a functionally useful Manifold, that will
give you decent performance in your power range.

Specifically designed for the 'low-to-mid' range power band of up
to 4500 RPM's.

Also, the ports will line up well with your 318.

The Edelbrock 318 Streetmaster came thru with a Square-Bore carburetor mount. That would be the choice for the 600 Holley.

Also, it is a sharp looking Aluminum Intake.
--------------------------------------------------------------------------

The 1971 340 Intake, is a great unit. But, it has a Thermoquad Carb mount, and has larger runners........

It would not be my choice for an 'all stock' 318.
Click to expand...

agreed ×2 and why you ask? Because I had the same exact setup on my 72 stock 318 duster. I got a Streetmaster 318 manifold from the swap meet for about the same price. I got a nice rebuilt Holley 600 carburetor. I put the smaller spring in the vacuum secondary to make it open up faster. I put a 340 cam in it and new lifters very easy to do and some headers and boy did that car respond great drove great sounded great and look great that's my $0.02 with real world experience for what it's worth.:burnout:
 
Correct J-Par

The 'OP' has an all stock 1973 Dart 318 with an MSD-6AL and Dual-Exhaust.

He's not going anywhere in a hurry.

He's just looking for a little kick in performance.

His question concerning Intake Manifolds, was between an
Edelbrock 318 Streetmaster and a 1971 340 Cast Iron unit.

With plans of mounting a Holley 600 'Square Bore' Carburetor
on the Intake of choice.

If he can pick up a Streetmaster 318 for $100, that is a fair price.

http://static.speedwaymotors.com/RS/SR/Product/3253175_L.jpg
 
Johnny Dart said:
Edelbrock Performer......Be done with it !!!!!! :)
Click to expand...


When we bought my son's 71 Valiant, it came with an Edelbrock Performer intake. We swapped it for an LD4B and it ran much better. No off line bog and strong pull. Stock 318 with a 625 Edelbrock carb and 2 1/4" dual exhaust. Nothing else, all stock except for dual exhaust and 4 bbl....
 
RustyRatRod said:
It's funny that it was the choice of millions of factory 318s right from Chrysler. Same port size and volume. Chrysler knew it was a mismatch and did it anyway. Millions of times. MILLIONS. No one ever complained that they ran bad. I remember when we had 318 and 360 Diplomats in Macon. Those are what ALL the cops wanted. Nobody wanted the chebbie or Ford.
Click to expand...


Yes, it will work and run better even with a port mis match.


The mis match is not a game killer, just for people trying to squeeze the last 2-3 Horsepower out of their engine.


You will be better off running the "mis matched" ports with a well designed intake, than with match ports on a sh!tty designed intake...
 
It been my experience that a dual plane is a far more responsive in low rpm to mid range.., that same experience found the single plane better for Hi rpm,, but off the light, felt like stepping on a bag full of pup poop compared to the dual plane..

I'd use (and have) the 340 cast over the single plane... jmo


season's best
 
chewy said:
My preference here is the edelbrock ld4b, it's a good well performing dual plane with the 318 sized runners. I ran one on a 77, stock 318 and had a noticeable increase after it went on.
Click to expand...

Yeah. You gonna buy him one? Everybody thinks they are gold instead of aluminum. have you seen their prices lately? They're good, but they ain't THAT good. lol
 
RustyRatRod said:
Yeah. You gonna buy him one? Everybody thinks they are gold instead of aluminum. have you seen their prices lately? They're good, but they ain't THAT good. lol
Click to expand...


Yep, I've found more LD340's than LD4B's....
 
Edelbrock

* LD4B ... Going price...... $175 and 'North', if you're lucky to find one.

No question that the LD4B is the 'optimal choice' here for performance, but >
--------------------------------------------------------------------------------------------

* Streetmaster 318 .... Can be had for $75, and some for 'South' of that price.

On a 'stocky' 1973 318, the Streetmaster will work fine.

Small plenum, short length runners, with narrow ports. Can
deliver an adequate throttle-response on the low-end.

The small runners were designed to improve port-velocity
at lower speed, which in turn was to promote better gas mileage.

From {Idle to 4500 RPM's}, this is a functional Intake for in-town
general driving and highway cruising.

http://ts1.mm.bing.net/th?&id=HN.608023578298289803&w=300&h=300&c=0&pid=1.9&rs=0&p=0

Nobody is going fast here anyway.
 
krazykuda said:
When we bought my son's 71 Valiant, it came with an Edelbrock Performer intake. We swapped it for an LD4B and it ran much better. No off line bog and strong pull. Stock 318 with a 625 Edelbrock carb and 2 1/4" dual exhaust. Nothing else, all stock except for dual exhaust and 4 bbl....
Click to expand...

Off line bogg was not the intakes fault. Sounds like the car was not tunned properly. I have no experience with the LD4B, but I do with the Performer. The intake works very well, and speaks for itself. Plus, I could have one tomorrow.
 
Yup the Performer is a good intake and also has the 318 port size.
 
Any of the intakes mentioned here are doable, and I do have a passion for the old school stuff. Assuming the car has a stock converter & gears, along with a stock cam, the increase in power will be felt in a narrow range.....like 3500/5000 rpm's. And that will come mainly from the cfm increase vs the intake design.

If you think the Streetmaster is cool/racy looking, get it and use it. With the timing/curve done right, it should run fine.

Overall considering weight & cost (used), you can't go wrong with the Performer, as it would probably have the best overall power curve. But really, we're splitting hair's here?

I have one on the shelf I could throw in the mix also...(Sp2p) :D.
 
Between the two you are looking at, go for the best bang at lowest cost. OEM will probably be least problem over all.
 
OldmanRick said:
Any of the intakes mentioned here are doable, and I do have a passion for the old school stuff. Assuming the car has a stock converter & gears, along with a stock cam, the increase in power will be felt in a narrow range.....like 3500/5000 rpm's. And that will come mainly from the cfm increase vs the intake design.

If you think the Streetmaster is cool/racy looking, get it and use it. With the timing/curve done right, it should run fine.

Overall considering weight & cost (used), you can't go wrong with the Performer, as it would probably have the best overall power curve. But really, we're splitting hair's here?

I have one on the shelf I could throw in the mix also...(Sp2p) :D.
Click to expand...

X2 million lol, splitting hair's and the original poster hasn't been back?
:happy1: FABO at its best! LOL:happy1:
 
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