Ford 427 Engine: Big Block? Oh Yeah - VehicleHistory (2024)

S.D. Grady

Mar 4, 2021

Ford 427 Engine: Big Block? Oh Yeah - VehicleHistory (1)

How often have you taken your grandfather’s classic Ford out for a cruise across town and heard, “Does it have a Ford 427 engine under the hood?” What makes that engine so special?

What are the specs for the Ford 427 engine?

The Ford 427 engine has a displacement of 425.98 cubic inches or 7.0 liters. It features a bore of 4.23 inches and a stroke of 3.78 inches. It is a V8 and has been manufactured as a top and side oiler. Some performance versions are able to achieve over 550 horsepower.

Those are the simple numbers for the FE 427. You can find Plymouth and Chevy engines of the muscle car era with similar specs. What is the real story behind this iconic engine?

History of the Ford 427 Engine

In the 1950s, American cars were getting bigger, but the engines were not quite up to the task of running all day on an interstate. Big block engines were heavy, often reducing the effective performance of the vehicle.

In 1958, Ford released the FE (Ford-Edsel) 427 V8 engine, featuring steel for crucial components instead of heavier iron. Intended for the pickup, heavy-duty truck, and bus market, the racing world took note of the engine’s durability and huge displacement.

In 1963, Ford added the 427 engine to the Ford Galaxie, which made it eligible to be used in NASCAR races. Tiny Lund won the Dayton 500 that year with four other Fords running the FE engine coming in second through fifth. Ford went on to dominate the season.

For the 1964 season, a high-rise version of the engine was introduced. It required a modified hood to make room for the tall design, and once again Ford raked in the wins at the track. However, the engine was banned after ’64, as the hood design was not safe or realistic for use on a standard street car — one of NASCAR’s qualifications for entering a car or engine in competition.

A version of the 427 went on to win the 24 Hours of Le Mans in 1966 — the year that Ford finally took down Ferrari on the international racing scene. The low-rise version continued to appear in NASCAR over the next several years and was featured in a wide range of Ford vehicles at the showroom.

The 427 was found at the drag strip, on road courses, and just about anywhere that speed demons were laying down a quick quarter mile.

It went out of standard production in 1976 but remained hugely popular on the racing circuit and for custom builds. Many road racing enthusiasts still will build 427s for their street rods even in the 21st century.

What Models Ran the Ford 427 Engine?

The 1963 Ford Galaxie, the 1967 Ford Fairlane, the 1965 Cobra Mark III, the 1965 Ford Thunderbird, and the 1968 Ford Torino are just a few. It was also found under the hood of the F100 and many school buses. The 1966 Ford GT40 that won the 24 Hours of Le Mans was offered to the public, but under 20 were built as street-legal cars.

Is the Ford 427 Considered a Big Block Motor?

The Ford 427 engine is considered a big block engine with a displacement of nearly 7.0 liters. After the gas crunch of the ’70s, the big block engines nearly vanished as manufacturers were required to produce commuter cars with improved fuel economy.

What Years Did Ford Manufacture the 427?

The FE 427 was continually manufactured from 1958 to 1976 for installation into many of Ford’s most popular muscle cars. After 1976, the 427 remained in production by performance racing shops. The engine was also often used for marine and industrial applications, ensuring a large supply of after-market parts.

Is There any Difference Between a 427 and a 428 Engine?

In 1966, Ford adjusted the manufacturing process for the 427, slightly changing the bore and stroke without significantly impacting performance. It had a minimal increase in displacement, earning the 428 name. If you are wrenching on these old motors, you will need to know which one you have to ensure proper fit of parts. The 428 Cobra Jet is the performance version of the 428.

Is the Ford 427 Considered a Flathead Ford?

No. The flathead Ford V-8 engine was produced from 1932 until 1953. After the iconic flathead design came the Ford Y-block, which was ultimately replaced by the FE 427.

Can You Buy a New Ford 427 Engine?

For about $10,000, you can purchase a race-ready 427 crate engine for use in your sports car. It is not a true replacement for the FE 427, using newer technology, materials and assembly processes.

Collectors of the classic cars can find rebuilt FE engines at a comparable price.

Get the Whole Story When Shopping for a Used or Classic Car

If you are checking out a classic muscle car for sale, you might want to know if it really has the stock engine under the hood.

Click on VehicleHistory.com and learn more about the year, make and model of your prospective ride before you put down your deposit. You can even receive a maintenance history with just a few clicks.

Owner Reviews

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Bill Ballinger on September 30, 2023

A tad more factual FE engine history.

The FE engine had humble beginnings in 1958. It was to serve as the main mover in the Ford and Edsel lines. The senior Mercury, Edsel, Lincoln saw an Engine line called the MEL,The FE was a lightweight, muscular engine that was exciting to drive, and the MEL was a very robust and heavy engine, and unlike the FE it was a large, smooth and sedate engine that wasn’t a high revving performance engine even in the early years. The 332,352,361 engines were doing well in the 1958-1960 years and performance was made for luring Police Departments for use. The star in that era was the 361 Edsel engine which was a prime choice for police departments. The engines had a Holley Carburetor, streamlined exhaust manifolds and remained solid lifter engines with twin exhaust. It made 360 hp and was supposed to Police only, but they could be sold and installed by the service department. In 1961 Ford made a new engine that became a mainstay in Ford and Mercury cars and trucks. The 390 was offered in performance packages off 375 hp with a single carburetor and a 3x2 bbl engine at 401 hp. The 1962 year brought a larger, thicker bore 406 offered in 385 hp and 405 hp again with the single 4V and 3x2V 405. Towards the end of 1962,the 406 was to the power level that to be competitive some changes were needed to deal with endurance issues and the cross bolted main bearing caps that we see today were introduced into the last 406 engines. These engines were great but they would need an engine built for competition with no compromises. The 406 engine was reborn as the 428 with a .200 longer stroke and lower compression, hydraulic lifters for the Thunderbird and the Police Interceptor. On the board for 1963 was a new casting, a precision cast engine with a precise mix of metal and exacting techniques to produce a light and exceedingly strong set of components that were designed for running 600 hp all day, with cylinder heads designed to feed it at that level and to do it reliably. The 427 FE. The engine was built with two engines in mind. The 427 Low-Riser and the High- Riser. The High Risers were capable of 625 horsepower and they worked to hone the weaknesses out of the 427, and in 1964 it found those weaknesses and amazing strength in an engine that weighed what a 351 W in the future would weigh. But NASCAR said no to the high-riser heads. The 427 Low Riser was a street going engine made for 410 hp single Holley and 425 hp with 2x4 s in a street car. There was some argument as to the accuracy of the hp numbers as a good tune would pull 500 hp and 485 ft lbs of torque. Street racers wanted these engines so badly but the supply was limited and added a premium to the price of a car. Not for the “kids “ . This was a mistake because of Lee Iacocca wanted his Mustang to be the star, while HF2 was focused on his engine and was enraged that the “kid “ cars couldn’t accommodate the broad shouldered 390-427. On the other side was the 90 day wonder that stunned everyone when the season began the 427 SOHC was developed to do war with the HEMI, the engine was so powerful that Bill France put a very heavy weight factor on it that since the High-Riser was disqualified.. They tried to bring in the SOHC as it fit under the hood, but no dice. Fortunately they had a double improvement for 1965. They adapted the lower passege to make the engine priority main with the passage like the Yblocks used and filled the floor of the High-Riser head and tucked it into under the hood neatly. By 1965 the 427 MR was running wheel to wheel with the Hemi and was bulletproof in the oil feed and the sophisticated design of the heads. In 1966, the FE could fit in the Fairlane. A front stub frame was allowed for safety, and they really were quite the car. The 427 was detuned for the LeMans program, when the 289 didn’t have the wheeties to compete, but the LeMans program bore fruit in 1966. The 427 and the wonderful car combination put the whole organization on its ear.,they could ease along at 6400 rpm’s making 485 hp and let them eat revved to 7000 rpm’s and ran laps on everything. I could go on about the aero wars in NASCAR. But Ford finally realized that they were talking a shellacking on street cred. Along came a fellow named Tasca who suggested taking the 428 PI with a reboot of the 406 head in the Mustang. This resulted in the 428 Cobra Jet and Super Cobra Jet. Total Performance sold heavy duty blocks, even 427s . Then along came the Boss 429 from the 385 series with a set of Semi-Hemi heads for NASCAR. But the FE wasn’t dead yet. In 68 the Tunnel Port was introduced. We saw a strange thing happen. Comparing the dyno numbers the TP was making 604 hp on the big tracks and strong as granite bolsters. This held true up to 72, they also ran away on short tracks and road courses because the Boss was 175 lbs heavier and. COG , it was up high. The hp was only 613 max and the valve train was fragile and they broke. Then the small block revolution began.,It surprised many people at how light the FE still is. I believe that is the reason they get so much love even now. FE Power makes a pushrod adapter that creates a dry valley and the ability to change cams and intakes without draining the water. Wonderful light as a 351W. The FE soldiers on!

Bill B. on December 19, 2022

This article is incorrect

The Ford 427 was introduced in 1963 and was available in certain Ford and Mercury models into 1967. The 427 engine is a FE big block. The FE big block was introduced in 1958 as a 332 cubic inch engine.it was increased in size through the years and available in different sizes through the years. 332, 352, (360 pickup only), 390, 406, 427 and 428 cubic inch engines were available. There were various heavy duty truck engines available as well as special racing engines.

Roger on November 23, 2021

Experienced journalist??

The 427 FE was not introduced in the 1950s but instead 1963. If Sonya was an experienced journalist, she should have easily uncovered this in her research. It just reflects the laziness, irresponsibility and the fact that articles like this are all about advertising and turning quick bucks rather than responsible journalism.

T on January 9, 2023

No 427 Torinos

While the 427 cu in (7.0 L)-4V FE engine was initially listed as an engine option for 1968 in factory literature, no Fairlanes or Torinos were actually produced with this engine during 1968

Tiny lund on July 20, 2023

Wait what!

Lost me at “Tiny Lund won the Dayton 500”

Tim on October 8, 2022

FE was introduced in the 50s as author indicates. She then went on to state it was the 427 that came about in 1960s with use in 63 galaxiere

Correcting an ignorant comment

S.D. Grady

Sonya is a vastly experienced journalist who loves to share her passion for everything automotive. You can usually find her at the track covering NASCAR, taking a test drive, or drooling over the latest models at the local auto show.

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