Has anyone tried the new Edelbrock AV2 carburator, it promises better response and fuel savings or is it just alot of nonsense?
They make an 800. I have one here I plan on using for a 440 build. Good carbs! https://www.summitracing.com/parts/...CwbvWTlMMHmXMyoBKZ_gD9i2e8f6lyQYaAizZEALw_wcB
Wow, thanks for your reply cause when I called Eddy's tech line last year, the tech said no 800. So glad they finally made an 800 version. I may get one for my 383 if I use the turned down 440 crank instead of a stock rebuild.
I replaced the factory Holley 4160 with a Edelbrock AVS2 carb and I love it. I haven't driven it enough to know if the mpg has improved.
Let me re-phrase the question, Edelbrock has come up with a new mouse trap, the primary annular booster, replaces the age old regular fuel dump, the new carburator is called the AV2, not AVS, does any one know if this new feature, used for donkey ages in Jet engines, annular can discharge, is really as good as they claim or is it just propaganda marketing ?
That's not a AVS 2 in that link. When I talked to Edelbrock this summer they said that the 800 would be out in the fall. I guess they're a little behind.
Well generally speaking, annular discharge boosters do help with lower-end response. Especially on larger carbs or lower vacuum engines that may give up a tad down low. The common theory is that they don't benefit the WOT and may actually hamper it, very slightly. If they have annular boosters on the primaries only, who knows...maybe an attempt at a 'best of both worlds' setup?
I put one on my 69 300 this year. Love it. No Stumble of idle, very responsive. Don't think I gained any mpg tho..
Very interesting! I have the standard 1812 800cfm Thunder...I would guess the boosters would fit it if/when the 800cfm AVS2 comes out. I'd try it.
Used them 4 times now, 2 500's and 2 650, in each case much better throttle response, no bog of idle anymore. I changed a 650 performer with a 650 AVS2 on a 383, and a 750 performer with a 650 AVS2 on a 440. I don't feel a difference in power, maybe there is when you put it on the dyno, i don't know, but in regular traffic, much better.
Thanks bee1971, didnt know about the drawing. I love AVS's & Holley's. Carters seem to be a little more dirt tolerant,Holly's aa little more tunable. Do your due diligence & both are easy to work on.
They talk about it (800 AVS2) in there latest blog like it’s already available on Edelbrocks website But But But - I don’t see it anywhere Quotes "We followed up this year with a new 800cfm AVS2 that provides optimum performance for high-horsepower applications on both small- and big-block engine applications." "The Edelbrock AVS2 Series Carburetor is available in 500cfm, 650cfm, and now 800cfm for high-horsepower applications"
Do the existing metering rods work with the new carb? I am running an 1812 (Edelbrock 800 AVS Thunder) on a 440, runs very well, but this is intriguing. I am wondering if my existing tuning (rods, springs) would carry over?
Koala, they probably should work, BUT remember that even 800cfm sounds good when bench-racing; bigger is not always better on the street.
I’ve used one on an customers car. It ran perfect. I recommended one to a friend to remove the famous stumble off idle and it fixed his problem as well. Both were 650 AVS2
