How To Identify A Carter Carburetor?

What does AFB stand for on a Carter carburetor?

In 1957, Carter started marketing the AFB series carburetor, and it quickly became a widely accepted standard for the automotive industry from the late Fifties into the late Sixties. AFB stands for “aluminum four barrel ” and this carburetor was used as original equipment on many OE performance engine options.

What CFM is a Carter AFB carburetor?

The cfm of the Carter WCFB four-barrel carburetor is approximately 400. The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air cleaner flange.

What happened to Carter carburetors?

In 1984, with fuel injection having replaced carburetors on most cars, the plant closed. In 1985, American Car and Foundry shut down the entire Carter Carburetor foundry, a year later ceding the PCB-contaminated property to the City of St. Louis.

What do carburetor numbers mean?

Weber model numbers are always stamped on the carburetor body. They always begin with a 2-digit number (or a pair of 2-digit numbers separated by a slash) followed by three or four letters. The model number prefix is a 2-digit number that refers to the diameter of the throttle plate(s) in millimeters.

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How do you find Carter AFB?

The Carter AFB carburetors are roll stamped with an identification marking at the right front base of the carburetor’s mounting ear. The top line of the roll stamp identification has the carburetor identification number.

How do I adjust my Carter AFB carburetor?

How to Adjust the Mixture on a Carter AFB

  1. Turn the engine on and allow it to warm up.
  2. Locate the two large slothead screws at the bottom of the front of the carburetor.
  3. Turn one air/fuel mixture screw in a clockwise direction with a slothead screwdriver with the engine idling until the engine speeds up.

What CFM is a Carter ThermoQuad?

Wide-open, the “small” TQ was rated at 800 cfm, while the larger unit spec’d at 850 cfm, blowing away the airflow capacity of any previous OEM Mopar four-barrel. While the ThermoQuad certainly had the flow to support big power, the timing of events curbed its chance at glory as a high performance carb.

How does a Carter AFB carburetor work?

When the throttle is depressed, and engine vacuum drops, the piston is pushed up by the spring, pulling the metering rod out of the jet, increasing the amount of fuel available for the engine to consume. The fuel passes an air bleed that is similar in concept to the air bleeds used in the idle circuit.

Who bought Carter carburetors?

William Carter only helmed the company for 13 years before American Car and Factory bought the company, and continued to run it as a standalone company until 1985. Carter models are still produced today by Weber and Edelbrock.

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When did Carter carburetor go out of business?

During its operational life, the plant manufactured carburetors for gasoline- and diesel-powered engines. In 1984, ACF Industries Inc. closed the plant and dismantled much of the equipment.

Is Carter and Edelbrock the same?

Carter AFB’s are the same thing as the Edelbrock Performer series carbs, Carter made them first, but edelbrock bought the design.

What happens if your carburetor is too big?

If the barrels are too big, the loss of air velocity means the cylinder will not fill to its full capacity. An engine with a carb that is too big will put out less Torque and Horsepower. It will be difficult to drive due to poor low-end torque. If you drag race your car, an oversized carb will produce slow 60 ft.

How much horsepower will a 750 cfm carb support?

A 750DP on a 330hp-400hp 5.7 with a dual plane intake (performer rpm) is easy to tune and will make max power to boot.

What size carburetor do I need for a 350?

A 600-cfm carburetor may perform quite well on a stock 350 Chevy. However, the minute you start weaving in power adders like a hotter cam, a dual-plane performance intake manifold, and aluminum heads you’re going to need 700-750 cfm.

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