Quick Fuel HR-Series Carburetor 680cfm VS # HR-680-VS Rate_Engine Valve Lift with Factory Rocker

Valve Lift with Factory Rocker Arm Ratio:

The aerodynamically designed chambers flow 23 percent better and produce more horsepower and torque than the most popular high performance brand

2 Groove Water Pump Pulley fits Chevy 283

or tachometer

Quick Fuel HR-Series Carburetor 680cfm VS # HR-680-VS Rate_Engine Valve Lift with Factory RockerQuick Fuel HR Series Carburetor 680cfm VS # HR 680 VS Carburetor, HR Series, Gasoline, 680 cfm, 4 Barrel, Square Bore, Vacuum Secondaries, Electric Choke, Each CFM: 680 Fuel Category: Gasoline Remanufactured: No Number of Barrels: 4 Carburetor Flange: Square bore Choke: Electric Secondary Type: Vacuum Fuel Inlet: Dual Primary Jet Size: 70 Primary Power Valve (Hg): 6. 5 Hg Primary Discharge Nozzle Size (in.): 0. 031 in. Secondary Jet Size: 74