Air Valve Secondary Well, that is all about to change thanks to Edelbrock's new AVS2 carburetor. The AVS2 (Air Valve Secondary) is ideal for use in a wide variety of applications for both small-block and big-block engines. Some of the benefits of the AVS2 include: Crisp throttle response.

The AVS2 Series is the next generation in Edelbrock carburetors. The AVS2 Carburetor is ideal for use with a wide variety of Small-Block and Big-Block engines.

AVS stands for air valve secondary, which describes the spring-loaded air-valve door. The Edelbrock carb uses a mechanical secondary but does not employ a secondary accelerator pump.

The company is headquartered in the Memphis area (specifically Olive Branch, Mississippi), with a Southern California R&D Tech Center located in Cerritos, CA. The Edelbrock Sand Cast and Permanent Mold Manufacturing foundries are located in San Jacinto, CA.

Basically, the AVS2 was designed to help your classic engine start quicker, run smoother, and allow for better low-end throttle response – all the benefits of EFI but without the electronics. When upgrading from a traditional down-leg booster carburetor, improved fuel economy is a definite positive!

Under light-load conditions (which is roughly 80- to 90-percent of carburetor operation), engine vacuum compresses the spring and places the larger portion of the tapered metering rod in the jet. This reduces the jet's flow area, allowing the engine to run at a leaner air-fuel ratio.

The Address Verification Service (AVS) is a standard credit card verification feature supported by Authorize.Net that compares the billing address provided by a customer for a credit card transaction with the billing address on file for the cardholder at the credit card issuing bank.

6.5 psi Carburetor Fuel Pressure by Manufacturer

Every Edelbrock Carburetor is manufactured in the USA and has been specifically designed and tuned by Edelbrock engineers to provide the widest overall torque range.

Edelbrock has introduced its E-Street cylinder heads, a new line of lower-priced stuff to combat the knock-offs and the legit competitors that use Chinese castings. The E-Street heads are cast and assembled at Edelbrock facilities in California, USA, and are currently available for small-block Chevys and Fords.

Yes, to an extent. The carburetor regulates the air-fuel mixture by means of suction while an EFI system is able to deliver a much faster and accurate response through the use of injectors. EFI systems are able to run more efficiently and effectively which means fewer emissions and better fuel economy.

Fuel injection, because it can be more precisely controlled, results in more efficient use of fuel, reduced fuel consumption and fewer emissions, which is the main reason it began to replace the carburetor in the 1970s.

An AVS check compares the billing address used in the transaction with the issuing bank's address information on file for that cardholder. Depending on whether they match fully, partially, or not at all, the merchant can use that information in their decision on whether or not to accept or cancel the order.

One of the fraud prevention tools provided by all card networks is an Address Verification System. By submitting the customer's address information in the billToAddress section of the cnpAPI message, you can verify that the address/zip code supplied by the consumer matches the issuer's records.

6.5 psi Carburetor Fuel Pressure by Manufacturer

6.5 p.s.i. The fuel pump pressure should be no more than 6.5 p.s.i. Take the top of the carburetor off and check for debris in the needle & seat, also inspect the needle tip to be sure it's not compromised.