Edelbrock/Carter 800 AFB Or AVS?

[slant six]

I have a 750 Performer/AFB on my setup now.

I wanted to try and experiment with the 800 to see if there are any gains to be had with my combination.
Is there any advantage to the AVS / AVS2 other than the Cheaper price tag?

I have used the Performer series / AFB's for years with much success, but If I was to buy a new carb what are the advantages between one or the other?

Looking at the Edelbrock 1912 or the Edelbrock 1412.

Thanks, Sages!

 

[GTX JOHN]

AVS is easier to tune secondaries coming in to eliminate bogging/stumbles.
Secondaries flow a bit more on 800 but I could not find difference in ET on the Track
when both were tuned on my 10 second 440 Valiant.

 

[RustyRatRod]

I don't have direct experience, but from literally everything I've read and heard people talk about @GTX JOHN is dead on the money. The AVS is easier to tune, primarily because the secondary air door is above the boosters and like a Thermoquad the tension is readily adjustable. Being above the boosters also supposedly makes the transition a lot smoother and that normally results in lower ETs.

 

[rumblefish360]

The AVS-II is better than the AFB.

 

[GTX JOHN]

I agree that the Drivability with the newer Annular booster is
clearly better than AFB. Also better throttle response under load.

However, my Valiant race car has a 3500 convertor and 3:91 gearing.

With that combo I found not difference in ET whatsoever, Therefore I do
not recommend rushing out to replace the AFB on your Drag Car.

 

[Bewy]

John,
10 secs & you are using an AFB/AVS????? Shouldn't you be using a 1050 Dominator, lol.....

 

[GTX JOHN]

That is my street "69 Valiant Pump gas 440 = 030 Hydraulic lifter 9.5 Compression running through the muffler
and Air Cleaner on (3:91 gears/2500 Stall). It has won the LVMS Pro Championship without any transbrake.
280/480 Camshaft. It does have an extremely high flowing Performer RPM heads (350+ on a conservate flow bench).

It is at Mopars at the Strip every year for last 20 years (And won several years) and many guy on here
have seem it.

I run Dominators on some of our race cars, but they are a Hell of a lot faster and lighter. Even those
are only a tenth or at the most two tenth faster than with a 4150 HP and it takes me way more time
to Dial in/Tune the Dominators after I find the right number of the dozen ones they have produced
over the years.

I will talk my boy into posting a picture or two.

It is WAY easier/simpler and cheaper to build and run, than to get our 340 Stock Eliminator cars run mid to low 10s!

 

[1969383S]

800 AVS2 is an excellent Choice. I used the 800 AVS model 1813 on my 383 and had mine tuned out in very short order! Has been awesome and trouble free for ten years!