Automotive History: The Ford FE Series V8 Engine

ford 406 pbase

406 (6.7 liter)  Bore: 4.130″ Stroke: 3.784″

On November 17, 1961, Ford went back to Daytona International Speedway to replicate the testing of the 352 for the new 406.  It was a 600 mile test at full throttle speeds.

Introduced shortly after January 1, 1962, the 406 had a 4.13″ bore and a 3.78″ stroke.  Coming in either four-barrel or triple two-barrel form, it punched out 385 and 405 horsepower, respectively.  Such power allowed the engine to propel the very non-aerodynamic 1962 Ford Galaxie to speeds in excess of 150 miles per hour, which was claimed to be faster than the average speed at the 1961 Indianapolis 500 race.

Yet endurance tests don’t always mimic real-world performance.

1962 pikes peak climb

image source:  www.stockcar.racersreunion.com

While a 406 powered Ford won the July 1962 running of the Pikes Peak hill climb, the Chevrolet 409 spanked the Ford 406 in drag racing.  On the NASCAR circuit, a 406 powered Ford was the winner in only 6 of 53 races.

With such a lackluster track record, Ford eliminated the 406 shortly after the beginning of the 1963 model year.

The 406 was a $379.70 option on the full-sized 1962 Ford.  Using a different casting that provided thicker cylinder walls than the other FE engines, the 406 also had stronger pistons and connecting rods, dual valve springs, and an oil relief valve set at 60 psi instead of 45.   A 406 was also the 30 millionth V8 produced by Ford.

Maintenance Note:  There was a running change in the manufacture of cylinder heads on the 406, which resulted in the internal valve spring pilot being machined off.  So if you are replacing heads, make sure you have sourced identical type heads, as they do not intermix.

1966 Mercury Full Size-30-31

410 (6.7 liter)  Bore: 4.054  Stroke: 3.980″

Does this sound strange?  Introduced in 1966, the 410 only stuck around for two model years.

1967 Mercury-08

Standard issue for the Mercury Park Lane, this engine was rated at 330 horsepower .  It was optional on all other full-sized Mercury’s.  Having the same 4.05″ bore as the 361 and 390, it had a 3.98″ stroke that would later be used in the 428.

Specifics about the need for creation of this engine are quite scarce, so your author needs to exercise some deduction.  For 1966, the 265 and 275 horsepower 390 in the Mercury (the lower output engine was mated to the three-speed manual transmission) both possessed a two-barrel carburetor.  The 410 had a four-barrel and also produced up to 45 lb-ft more torque than the standard 390.  This, combined with a displacement that provided a degree of exclusivity for your Park Lane, was likely the rationale for this engine.

Maintenance note:  Does your 1966 model 390 or 410 have a vibration between 800 and 1,800 rpm?  It is likely caused by the use of an incorrect flywheel.  The flywheel on a 390 should not have a balance weight or part number on the transmission side whereas a 410 should have the balance weight and part number.

ford 427 badge

427 (7.0 liter) Bore: 4.232″  Stroke: 3.784″  (Actually 425 CID)

When Tom McCahill from Popular Mechanix first drove a 427 powered ’63 Mercury, he wrote the car had “more hair on its chest than a middle aged yak” and is “as gentle as a barracuda in a fish bowl”.

1963 Mercury Marauder Foldout-02

When Cars magazine recorded a 0-60 mph time for a ’63 Mercury Marauder of 7.3 seconds (using only first gear), they were quite enthused, saying “could it go for a 4,200 pound car!”  This was from a car they stated idled quietly and smoothly at 800 rpm with a normal operating temperature of 180 degrees Fahrenheit.

The 427, introduced early in the 1963 model year, was more than a 406 that had been bored out to 4.23″ with the same 3.78″ stroke; it had cross bolted main bearing caps, aluminum pistons, and stouter connecting rods.  In short, this was a race engine that was able to be street driven.  However, as McCahill also noted, “one wrong twitch and you may plow up to eight cars in front of you.”

Ford had derived the 427 from a 483 cubic inch (7.9 liter) experimental engine that broke 46 various records in 1962 and recorded an official fastest speed of 176.98 mph.  What they learned from this engine materialized in the 427, an engine that was just right for the various 7.0 liter requirements found in racing.

While this 427 was heavily praised for being a vast improvement over the 406, Ford was now committed to what they were touting as “Total Performance” and they were not satisfied with the initial performance of the 427.  Prior to the end of the 1963 racing season, a “Mark II” version of the 427 bowed, having new cylinder heads with larger ports and valves, stronger connecting rods, and a ten quart oil pan.  Strangely, advertised horsepower was unchanged with the four-barrel version having 410 horsepower and the dual four-barrel having 425 advertised horsepower.

1963-Tiny-Lund

The stumbles with the 406 powered racers was eradicated with the 427.  Starting the 1963 racing season with a win at the Daytona 500, Ford would ultimately capture victories in 23 NASCAR races to Chevrolet’s eight.  The 1964 season was even better with Ford winning 30 NASCAR races.  The 427 had proven its mettle on the speedway and was doing so on the quarter-mile circuit.

Talk about the Ford 427 is full of different descriptors, such as “top oiler”, “side oiler”, and “cammer”.  So what is each?

427 oiling patterns

image source:  www.wikipedia.org

The top oiler is the original version of the engine as introduced in 1963.  In short, oil was routed to the valve train first followed by the crankshaft.  The side oiler was introduced in 1965 and it reversed the order in which oil was sent through the engine.

427 sohc

image source:  www.wikipedia.org

There is also the single overhead camshaft version of the 427 that appeared in 1964.  It was strictly a racing engine and was never installed in regular production cars.  This engine was created in response to the Chrysler 426 hemi; the single overhead cam 427 has the distinction of being the only engine ever banned by NASCAR at the time.

Ford Fairlane 1967 427

Available in full-size Ford’s and Mercury’s beginning in 1963, mid-sizers beginning in 1966 , and the Cougar in 1968, the 427 was the top dog Ford performance engine until 1968.

Maintenance Note:  Ford does not recommend reboring the engine blocks of 406 and 427 engines.

mercury 428 badge

428 (7.0 liter)  Bore: 4.132  Stroke: 3.980″

Introduced for 1966, the Ford 428 was a different creature than its one cubic inch smaller sister, the 427.  Whereas the 427 had a 4.23″ bore, prompting Ford to recommend against boring the block, the 428 had a 4.13″ bore combined with the 3.98″ stroke used in the Mercury 410.  Given the smaller bore sizes, this engine was much less expensive to manufacture than the 427 while still being able to deliver a copious amount of horsepower and torque.

The 428 should not be confused with the Ford 429.  The 429 was based upon the Ford 385-series family; the only other car engine springing from the 385-series is the 460 cubic inch (7.5 liter) V8.

1966Galaxie021

Initially available throughout the 1966 full-size Ford and Mercury line, the 428 was the standard engine for the Ford LTD 7-Litre and the Mercury S-55.  Initially available in 345 horsepower retail form, it was an engine to help motivate Ford’s increasingly heavier cars in the same manner to which people had been accustomed – if not a little better.

1966 Ford Police Cars-02

Ad copy for the 1966 Ford police car line certainly best insinuates performance, touting the police spec 428 was “a real scorcher that turns out 360 horsepower with top speeds well in excess of 100 mph”.  How far in excess is a question many are curious about, although the answer may be lost to the ravages of time.

Mustang 1968 CJimage: boldride.com

In April 1968, Ford introduced the 428 Cobra Jet.  Based upon the regular 428, the Cobra Jet had larger valves and intake ports, beefed up connecting rods, and heads from a 427; getting Ram-Air on a Cobra Jet was optional.  Like the 427, these additions oddly made no change whatsoever to advertised horsepower, due to exorbitant insurance premiums on high-hp engines.  There is also the 428 Super Cobra Jet, an engine that had a different crankshaft and an external oil cooler.  While also referred to as the “Drag Pack”, the Super Cobra Jet was intended for racing applications with the internal changes to facilitate added reliability and durability.

1969 Ford Mustang (Rev)-04-05

The 428 Cobra Jet was a $357 option in the 1969 Mustang Mach I; it was $421 in other Mustang’s.  In a Mustang so equipped, the sprint to 60 miles per hour could happen in 5.5 seconds.  It is estimated that around 13,000 Mustang Mach I’s came equipped with the 428 Cobra Jet.  The 428 Cobra Jet was also available in Cougar, Torino, and Cyclone models.

Many cars throughout the Ford lineup would be eligible to receive the 428, such as the Thunderbird in 1966 and 1967; the Mustang and Cougar from 1968 to 1970; the full-sized Ford and Mercury from 1966 to 1969; and the Montego and Torino in 1968 and 1969.

Maintenance note:  Does your 1966 Ford or Mercury with a 352, 390, or 428 have a metallic knock that sounds similar to a tappet clip?  It may be caused by the rocker cover oil baffle touching the rocker arm shaft pedestal support attaching bolt.

1959 Ford-01

 

The Ford FE engine was replaced by a combination of the Windsor and 385 series.  Appearing as anything from a two-barrel 332 in 1959 to a 428 Cobra Jet by 1969, the FE is one of the most adaptable and versatile engines ever to come from Ford.  Despite the last FE engine being placed in a passenger car over forty years ago, the continued popularity of the FE series engines is a testament to the intrinsic qualities of this fine power plant.

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Related reading:  1966 Ford Galaxie 7-Litre      The author’s 1963 Ford Galaxie 500:  Part 1  Part 2

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