Report - Edelbrock Thunder AVS

letsboogie351 · #1 (**permalink**) 06-18-2011, 02:57 PM

I might be wrong here but I am led to believe that Edelbrock took over "Carter" and that their carbs are based on the carter carbs. In my opinion Ford enginges responded better when equiped with a carter carby

Bobcat · #2 (**permalink**) 06-18-2011, 03:55 PM

Buzz ... which Ebrock did you get ... the 800 cfm unit ?? My Holleys are driving me crazy . Can get them to run at top end , but bottom end suffers or just the opposite . Or worse yet ... I finally get it all right and then it`s out of tune after several hundred miles . Just curious as I may try one . I`m running a 482 engine and am wondering if this carb is big enough or intended to run on big blocks .

Gaz64 · #3 (**permalink**) 06-18-2011, 04:06 PM

Quote:

Originally Posted by letsboogie351

I might be wrong here but I am led to believe that Edelbrock took over "Carter" and that their carbs are based on the carter carbs. In my opinion Ford enginges responded better when equiped with a carter carby

Yes, correct.

The Edelbrock Performer carb is a Carter AFB.

The Edelbrock Thunder AVS is a Carter AVS.

Both made by Weber.

Buzz · #4 (**permalink**) 06-18-2011, 04:40 PM

Bobcat, I had the same problem. Getting my Holleys to run well in one range always seemed to cause problems in another area.

I chose the 650cfm carb. I have a stroked small block and most calculators showed that to be adequate for my displacement and RPM range. The overwhelming majority of my driving is on the street so satisfying throttle response and driveability are my priorities. I think the 800cfm unit is recommended for big block applications.

One of the neat things about these carbs is the adjustable secondaries. I haven't played with mine yet as I'm just plain tickled by the way it runs as is.

Bobcat · #5 (**permalink**) 06-19-2011, 06:41 AM

Buzz .... thanks . I`ll talk to Ebrock Monday as I do track the car some , but if the partial throttle response is nice and crisp , it will be a big improvement . At VIR recently , times suffered as the part throttle ( can`t go WOT in the middle of a turn ) was horrible . The "cure " was to go one gear lower and rev the crap out of the engine and have to shift as I came out of the corner . How did the throttle linkage and fuel hook ups compare to what the Holley requires ?
BTW , you said the hood louvers helped let the heat out .... I thought they were to keep the front end down on the high speed roads down there ???

Bob

jhv48 · #6 (**permalink**) 06-19-2011, 07:38 AM

Ed carbs are known for crapping out on hard cornering. I had the Thunder AVS on my first Cobra. Never could get it to flow right on corners. Go over to FFRcars forum and do a search on Ed carbs. Not many good remarks.

Call ProSystems and tell him what you want. He will build a DP that will solve your problems.

cdnus · #7 (**permalink**) 06-19-2011, 08:31 AM

I've had two pro systems. The first was so bad I returned it to Patric & after checking he admitted they had missed the program & sent me a totally different & larger carb.
2nd. carb ran great when accelerating really sucked on cruise. I have spent many hours modifying the circuits & now have it I believe, as good as it can be.
When I called Patric on the second carb & even offered to pay for another not expecting anything for free, I was told that was all they had ( program wise ) & I was on my own.

This is not meant as criticism of pro systems, more as information that not all their carbs are as advertised "bolt on & go"

Craig