![]() The formula for calculating the maximum CFM your engine needs is -ĬFM = Cubic Inches x RPM x Volumetric Efficiency ÷ 3456. The size of your carburetor is based on the amount of air that flows through it in cubic feet per minute (CFM). While plenty of aftermarket carbs are available for purchase, a couple of pieces of information are good to know before taking the plunge and choosing one. Initially, most 390 engines were paired with an Autolite 4300 bbl carburetor. Are There Some Things to Know Before Choosing a Carberator? The emergence of imports from Toyota and other companies continued to erode the car market, and after a while, the Big Block era was all but dead. The large cars with monstrously big V8 engines were easy targets because they tended to guzzle gasoline. The 70s brought increasing pressure by both the government and consumers as they waited in long gas lines both973 and later in 79. The engine was discontinued for passenger car use in 1971 but continued to appear in pickup trucks until as late as 1976. In the late 60s, the car would find its way into the Mustang GT, making it one of the fastest muscle cars on the road. The engine continued through a few versions as engineers found more ways to increase the power. Initially, the engine was used in family sedans and police interceptors in the early 60s. So, the engineers experimented with their most reliable engine to see if they could pull more power out of it. Ford perceived that Americans wanted full-sized engines, not only in their family sedans but in their race cars. (Lee Petty won a photo finish driving an Olds 88 with a 428 cubic in Big Block V8). More and more Americans were clamoring for the sport of Nascar, with the very first Daytona 500 being held in 1959. The emergence of racing had a considerable impact on the desire Ford had to be able to compete. Unfortunately, Americans fell in love with the Impala SS, and the engine became the choice of many hotrodders who converted their parents' old jalopies into drag-strip monsters. Chevrolet had come out with the 409 V8 (which was even more significant than the 390 but didn’t have the output). The engine became so versatile that Ford sold it for use in buses, trucks, and even some marine applications.įor the most part, the motor was a bored-out version of the 352 (another FE venture), which Ford had used since 1958. From 1961 through 1976, the engine had a solid following, powering everything from the Ford Fairlane, Mustang GT, Mercury Cougar, Comet, and even Ford’s Police Interceptor. They manufactured the engine for use across multiple vehicles in the Ford and Mercury lineups through a joint partnership with fellow company Edsel (hence the name FE for Ford-Edsel). In the 1960s, when muscle cars with giant engines were designed to go fast, Ford pushed all its chips into the center of the table with the FE Big Block 390. In addition, we will explore some history of the 390 and why Ford put such confidence in this durable motor. In this article, we will attempt to offer some choices for carburetors that work with the 390 engine. No question rebuilding your existing carb is the cheapest solution, but it isn’t always the best way to go. ![]() What's the best carb for the FE 390? Should you purchase a new unit or go for a rebuilt one? The last thing you want to buy is a unit that won’t fit or doesn’t have enough intake to produce the power you desire. Refurbished Holley 600 CFM STREET WARRIOR.Edelbrock 1406 Performer 600 CFM Square Bore 4-Barrel Air.Holley 4160 390 CFM Square Bore 4-Barrel Vacuum.The best Carburetors for the Ford FE Big Block 390 V8 are. If the mix is fuel-heavy, the car’s plugs will fowl, and your garage fills with a gasoline smell. The choice of a carburetor can make the difference between running well or struggling to get down the road with no power. While most of the attention on a rebuild gets centered on the motor, how your car pulls in air and mixes with fuel is just as essential. ![]() The Ford FE 390 V8 is one of the favorites for rebuilds, but what about the carburetor? What are the best carburetors for the Ford 390?
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