The AVS2 Series is the nextgeneration in Edelbrock carburetors. The AVS2 featuresannular flow primary boosters with a new calibration for improved off idle and cruisingperformance. The annular flow booster design delivers improved fuel atomization to eliminate flat spots that may be encountered when the carburetor transitions from idle to full throttle. Each annular booster features eight, equally spaced orificesto improve fuel metering from idle to the main. The improvedflow metering makes this carburetor ideal for use with a wide variety of small-block and big-block engines with either dual- or single-plane intake manifolds. The AVS2 includes both timed and full vacuum ports for ignition advance.

500 CFMTHE ULTIMATE PERFORMANCE CARBURETOR
Designed and calibrated for small cubic-inch engines and dual-quad applications such asour RPM Dual-Quad Air-Gap, Edelbrock C-26, F-28 and Street Tunnel Ram. For single carb applications, match with an Edelbrock Performer or Performer EPS manifold or other brands of similar design. Includes both timed and full vacuum ports for ignition advance. #1901/#1902 are calibrated for single-quadapplications and factory equipped with: Metering Jets -Primary .095, Secondary .095, Primary Rod .070 x .052, orange spring (5' Hg).