Small Block 318 edelbrock carb

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Slantsix64

Slantsix64

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Putting on a four barrel carb on my 318 bone stock internally was thinking of the edlebrock 500 avs thunder series only thing is i was trying to choose between the 1804 model which has 0.86 primary and a smaller 0.77 secondary vs model number 1802 with 0.86 primary and larger 0.95 secondary

I was leaning toward the 1804 with smaller secondaries might be a little more fuel friendly vs the 1802 with bigger secondaries. would my 318 run good with the smaller secondaries? And no iam not trying to race anyone just tried of that 2 barrel performance let me know your thoughts!! thanks!
 
You didn't really answer his question bro.

Post starter; The smaller jet carb would probably be closer to what you want to achieve but a tuning kit is probably required no matter what carb you purchase. The 500 will have a crisper throttle response. How fuel friendly it is depends on your right foot, state of tune, the entire engines state of tune and how often the need to tip in the secondaries comes into play.

I have always used a 600. I never had a 500. I could always get good mileage from a 600.
 
I agree with sireland67. IF I didnt already have a carter afb thats what I would have gone with.

Is edlebrock calling an "AFB" and "AVS". Or does the thunder series
avs have a spring type adjustable door. I thought it was the same as a carter afb.
 
What kind of "bone stock 318"

Smogger lean burn in a four door fury, magnum truck engine in a early a body. Four wheel drive truck?

What kind of intake manifold. Two barrel with an adapter?
 
I used the Weiand Action Plus with a 600 eddy. I was well pleased.
 
Dragonbat13 said:
What kind of "bone stock 318"

Smogger lean burn in a four door fury, magnum truck engine in a early a body. Four wheel drive truck?

What kind of intake manifold. Two barrel with an adapter?
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its in a 65 dart 4 speed im using an edelbrock 4 barrel manifold
 
Slantsix64 said:
its in a 65 dart 4 speed im using an edelbrock 4 barrel manifold
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If heads are from a 65 then the mainifold is differerent then 66 and up. NOT interchangable without some modifications. :burnout:MT
 
Mopar Tim said:
If heads are from a 65 then the mainifold is differerent then 66 and up. NOT interchangable without some modifications. :burnout:MT[/t
thanks for the reply no the motor is from 1970 318 the car was original slant 6
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Dragonbat13 said:
I agree with sireland67. IF I didnt already have a carter afb thats what I would have gone with.

Is edlebrock calling an "AFB" and "AVS". Or does the thunder series
avs have a spring type adjustable door. I thought it was the same as a carter afb.
Click to expand...

The thunder series is just like the old Carter AVS with the adjustable spring on the secondaries.

Slantsix64 I think the smaller one will do you fine. A stock teen doesn't require much carb. If you go too big the vacuum signal to the boosters won't be strong enough to properly atomize the fuel killing the fuel economy
 
Okay guys I took the valve cover off and there’s a bent push rod I’m assuming because one of the lifters isn’t moving at all. What’s the recommendations? Should I just change 1 or all of them it’s on the driver side head
 
My '71 Dart GT has an Edelbrock 1406 on an Edelbrock LD4B intake (Lokar throttle and "kick-down" cables) on the 119,000 mile original 318 (internally factory stock except for Cloyes double roller timing chain & gears) with MP electronic ignition.
 
I've had excellent success with the AVS2 on my car. I think they make a 500cfm version.
 
I ran the big ThermoQuad on my 1973 318 for several winters; but it also had headers and duals.
Some winters it had a regular 4-speed, some with an A998/2800TC, and some with an overdrive.
And Every winter a different rear gear.
I put a tune into it the first fall, and after that it didn't really care about the carb.
The bigger one might be easier to sell, down the road.....
 
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slant
both of those avs carb will give the same mileage as the primaries are the same size
the air valve secondary (avs) will only open as much as you need
if a choice the avs2 will give better mileage and throttle response
that TQ clone would be even better
or you can come over and go through my TQ stash and we can find one for a 318
you would need a spread bore manifold, not hard to find
you need the right kick down no matter what you do

here is a TQ list we could print out before sorting through the stash
Fuel Injection or Carburetion ?
 
DartGTDan said:
My '71 Dart GT has an Edelbrock 1406 on an Edelbrock LD4B intake (Lokar throttle and "kick-down" cables) on the 119,000 mile original 318 (internally factory stock except for Cloyes double roller timing chain & gears) with MP electronic ignition.
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And I bet it's a nice running machine.
 
The 2800 really woke it up. With a 4-gear that would seem to not be an issue... but it depends on your rear gear.
For instance, if you have a 2.76 rear gear and 25" tires, then 2800 with a 4-speed Commando box comes at 24 mph. (With a regular box it comes at 28 mph). With an automatic/2800TC, it comes at zero mph.
Yeah sure, you can slip the clutch..... but to 24(28) mph; probably not the best idea.. If you finish slipping it out at 1800, that would be 15.4(18.0) mph.
If you had 200ftlbs at 1800 versus 235@2800, you can see why your teener might feel a lil sluggish.
If the tires don't spin;
Good luck getting your 4bbl to open and stay open at 1800 rpm, and good luck getting a tune into it; cuz at 1800 your 2bbl is more than big enough to handle the airflow requirement. It's even big enough to 2800.


Finally 200ftlbs at 1800rpm is 68.6 hp. Even if it was possible for a 4bbl to add 5% torque@1800 to your teen; 210 ftlbs is 72hp. You will never feel that.
At 2800, if your teen made 235ftlbs/125hp, plus 10% would make it 138hp; now you are feeling it.
But 10% more rear gear will make the 2bbl engine feel the same performance increase, but it will start right as soon as you put it into gear; no waiting until some higher rpm.

The point I'm trying to make is that if you need more off-the-line grunt, then maybe you need more TM (Torque Multiplication), aka gears.
Or cylinder pressure.

As much fun as rowing gears is; it is not without it's pitfalls, if yur stuck with just 4 of them.
 
gzig5 said:
I've had excellent success with the AVS2 on my car. I think they make a 500cfm version.
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Yes they do. 4 different Calibrations to Immanuel, to an electric shock. One of each of them is set up as a dual quad set.
 
AJ/FormS said:
Yeah I thought so too, but I wasn't gonna be the one to muddy up this thread,any worse that it already was,lol.
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Good discussion here lately and now we have the AVS2 that wasn't available back in 15'.
 
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