The new Mustang was beautiful, and it had a large enough engine bay to take the big mill. Performance options aplenty: tach, styled steel wheels, power front disc brakes, power steering, Traction-Lok differential (3.50, 3.91 or 4.30 axel ratios), bucket seats, racing mirroryou name it. one basic block for both the 429 and 460 with a 4.360-inch bore. What is the difference between a 428 and 429. A whole host of high-performance parts was available for the 396 from the Corvette larder, which further complicated matters in Dearborn. In the 1969 Supercar Annual magazine, one ran a 69 Cougar Eliminator ran a 13.90-second quarter-mile time with a 101.2 miles per hour trap speed. The rest of the info is the same. In lieu of reverting back to the factory 428 head castings, Tasca put heads from the 427 instead. The 1969 Mercury Cyclone continued on the Montego platform in the fastback form, and the GT was no longer a model, available as an appearance-only package. See more Reply Save Like 1 Restyled in 1970, the Mustang returned to single headlights that moved inside of the grille. In 2020, Ford came out with the most unique Cobra Jet in history, the All-Electric Mustang Cobra Jet 1400. I bought a 72' Thunderbird yrs ago it was still pretty powerful. Register now for free! Bore and stroke was 4.0 X 3.5. 428 FE police interceptor versus cobra jet - Club Cobra Consequently, Ford used Holman Moodys 428 engine as the inspiration it desperately needed to help reclaim its rightful place at the top of the pony car market. The largest was the 390 cid, which Ford first brought out in 1961. Representation from nearly all Cobra/Daytona/GT40 manufacturers Help from all over the world for your questions Build logs for you and all members Blogs As it turned out, the 427 heads massively improved both low-end torque and top-end power on 428. Is a 428 a cobra jet or is the cj a special 428 and is the block different between the cj and non cj. Cobra Jet Mustang production continued into 1970. In 1963, the 427 saw service in a series of lightweight Galaxies, which had seen some racing success despite their weight. Cobra Make, Engine: Previous ERA owner on break, Just a note on the LeMans rods. Pictures of some of these parts can be found in the component identification section of this web site. Wow, look at me actually providing an answer instead of asking questions all the time! Last edited: May 19, 2013 FrozenMerc, May 19, 2013 SHARE POST #3 hoop98 Member Untamed European elegance indeed. In the August 1968 issue of Super Stock & Drag Illustrated magazine, a 68 Cougar XR7-GT tripped the quarter-mile in 13.23 seconds, traveling at 103.4 miles per hour. The Cobra Jet package added $287.60 to the sticker price of a Cyclone. There is only one high-performance damper of the latter era: The SCJ damper, which has a heavy inertia ring, much like the LeMans. 1968 was the only second year of the Cougar, which only received minor revisions, including side marker lights and front shoulder belts. The Police Interceptor contained an aluminum intake, high performance camshaft and beefier connecting rods to produce 360 hp. But, from the factory it was never as powerful as the (solid lifter) 427. Compression was either 10.5:1 or 10.6:1, with 10.6:1 taking over from 1969-on. Yep, I'm a hack! Note that it was not thought to be possible to order an SCJ engine by itself -- the only way to get your hands on an SCJ in a Mustang was to order the optional 3.91:1 or 4.30:1 rear end gear ratios. Of course there's the Boss 429, but thats a horse of completely different color. The 428, on the other hand, has a smaller bore and longer stroke producing more torque and is well-suited to street-strip action. This package became notorious in slang as the Drag Pack. Block, heads, manifolds, etc. Nineteen-seventy was the last year for the venerable FE-series big-block engine in the Mustang and Cougar. Ford 7-Liter Engines Deciphered: 427, 428, 429 | Themustangsource They did so to honor the 1968 Mustangs that won the NHRA Winternationals, and inaugurated the first Cobra Jet era. In four years of its existence, the Cobra Jet name became synonymous with high-performance. However, it wasnt Ford Engineers that first developed this impressive powerplant. Just two years into production, Ford introduced the 429 Cobra Jet and Super Cobra Jet for compact and intermediate sized rides like Mustang, Torino, Cyclone, and Cougar. But there are other types of 428's and 429's floating around out there, built for different purposes, i.e. Another Dumb Question: 428CJ vs 428SCJ - Club Cobra document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Great article, but the 68 Cougar wasnt offered as a convertible! A fairly mild hydraulic cam combined with the good-guy Low Riser cylinder heads made for an engine with a flat torque curve and good horsepower numbers. Both the Cobra and Super Cobra Jets had dished cast pistons, and used stronger connecting rods than the standard 428. In 1958, Ford introduced their first line of big block motors, known as the Ford FE engines. During the 1970 model year, "DETROIT LOCKER DIFFERENTIAL" appears on the invoice of vehicles that came with a factory Detroit Locker. Technically a midyear offering, the 1968 1/2 CJ combined 427 Low Riser heads, a cast iron copy of the aluminum 390 Police Interceptor intake manifold, the 390 GT's hot hydraulic cam, a healthy 735-cfm Holley four barrel, and streamlined exhaust manifolds to fight off the 396s, 440s and 400s from the competition. The spirit of Bob Tasca and Carroll Shelbys original 427/428 hybrids still live on today if youre lucky enough to see one in person. In '69 the 351 was good for either 250 or 290 horsepower, depending on its carburetor configuration, while the four-barrel 390 dropped somewhat to 320. The increasing shift towards electric power plants makes it likely that any future Cobra Jets will be electric. The factory ratings were intentionally low for insurance reasons. Introduced in 1958 for service in fullsize Fords as well as the Thunderbird, the FE had seen a long and colorful career. The 406 was a serious development for Ford, as it catapulted them to NHRA and NASCAR victories in the mid-1960s. The Formal Roof versions were the ultimate sleeper, looking like your average everyday grocery getter to any unsuspecting contenders that pulled up next to it at a red light. The baddest of them all is the Boss 429. The 396 was known in Bow Tie circles as the Mark IV and was further known as the "mystery motor" because it was developed in secret for the '64 Daytona 500. The immaculate 1968 427 seen here powers Craig Keith's Cougar XR-7G and resides in West Brookfield. Ford branded the new 428 the Ford Cobra Jet engine, and they also put it in the Fairlane and Torino. It came in special Mustangs (and 2 Cougars) in 1969-70. Even in 2022, almost six decades later, the Ford Cobra Jets are still lusted over today by generations of gearheads. Either way, you can be guaranteed it will be a monster at the drag strip and not be lacking for power. If I can, I will try to get a picture of the "SUPER" stamp to show. They had introduced the 385 series in 1968 to start replacing the outgoing FE series. While the 1970 Ford Mustang Mach 1 came in eighth place on this list, it came in 21st place in the fastest muscle cars of 1970 rankings. Completely overhauled in 1968, the Mercury Cyclone underwent significant changes, including dropping the convertible and adding a fastback form. The Super Cobra Jets got forged aluminum pistons and higher performance camshafts, as well as a high-rise intake manifold. This field is for validation purposes and should be left unchanged. In the quarter-mile, a one-second difference is a lot of car lengths. the 428 CJ. . The C blocks were later. While the Cyclone was named the fastest car of the year, having set a world record speed of 189.22 miles per hour at Daytona, the 428 version wasnt the fastest in the quarter-mile, achieving 18th place overall. Lots of people have different opinions about the "Drag Pack" option described above, what it included, and which cars it was available for. 1969 Ford Mustang Mach 1 428 Super Cobra Jet Muscle Car Of The Week Video Episode #91The Mach 1 handling and appearance package made for some good looking an. Ford introduced their second generation of FE V8 big block engines in 1962 with the 406 cid big block. Super Cobra Jet harmonic balancer counter weight, 4 8th Place: 1970 Ford Mustang Mach 1 428CJ, 3rd Place: 1969 Ford Mustang Mach 1 428CJ, 2nd Place: 1968 Ford Mustang 428 Cobra Jet, 1st Place: 1968 Mercury Cougar XR7-GT 428CJ, more significant than 335 horsepower advertised ratings, Tasca Ford pioneered a high revving 428 engine, Top 10 Craziest Muscle Car Paint Colors from the Factory, Top 50 Fastest Classic Muscle Cars (1962-1973). The 429 is a 70 complete out of a Lincoln or some other 4 door. For the most recent 2018 Ford Cobra Jet, Ford used their modified Coyote variant, the 5.2 L Voodoo. I'm not sure about how well a 429/460 fits in '67-70's though. Note that the reinforcement bracket used with the Super Cobra Jet horn arrangement appears to have been used only during the 1969 model year. what's a 428 cobra jet engine worth | Hot Rod Forum Ford Cobra Jets came in either 351, 428, or 429 cid displacements, and there were also Super Cobra Jets, too. The Ford 428 Super Cobra Jet was only available in the 1969 and 1970 model years. When the buyer selected the CJ option, the GT option became mandatory. Ford was not caught in flagrante delecto, however. The 427 quickly became one of the most popular and powerful Ford engines, pumping out 425 horsepower. With more than 400 lb-ft available from 2,600 to 4,700 rpm, the Mach 1's tail is sure to be obscured in clouds of tire smoke. Although many early Mustang articles suggest that the 428 Cobra Jet was designed by Mr. Tasca, there are in fact more than 30 design differences between the components used by Mr. Tasca, the 428 PI, and the released 428 CJ. The error is described on the owner's Marti report; here's an excerpt. YES! So there was an overlapping period of perhaps a year from say June 1967 until June 1968 when both types were being made and used, apparently for both CJ and non - CJ applications. Most 428 Cobra Jet fans have heard of the "Detroit Locker" differential, a positive locking differential that was originally produced by Detroit Automotive Products Corporation (DAPCO) and is now available from TracTech Inc. Get exclusive muscle car content, giveaways, and a FREE Report on 10 of the most powerful muscle cars ever made right to your inboxabsolutely free! The 428 uses a crank with a 3.98 inch stroke and a 390 has a 3.78 inch crank. The big FE also became notorious as one of the powerplants for Carroll Shelby's outrageous big-block-powered version of the AC Cobra. The main bearing journal diameter measures between 2.7484 and 2.7492 inches. First, the 1969 price list: April 17, 1969 Mustang Drag Pack Option Description, June 1, 1970 Mustang Drag Pack Option Description, Cobra Jet Connecting Rod 428 cobra jet vs. 460. i was wondering if a 428 cj or a 460 would be a better engine for a street rod. It also saw the addition of a new convertible body style with a power top. Ford Cobra Jet 429-428-427 - CarMemories.com The differences for the SCJ were: 1) The beefer 427 "LeMans" connecting rods. In the January 1969 issue of Popular Hot Rodding, a 69 Mach 1 CJ 428 ran a 13.69-second ET with a trap speed of 103.4 miles per hourmaking it the tenth fastest muscle car of 1969. The most comprehensive guide to detailing a 428 Cobra Jet ever published. Because of the long throw, the 428 was more of a low rpm / torque motor were as the 427 was a high rpm race motor. Instead, "Tasca Ford"the second-largest Ford dealership in the world in the 1960sinspired the 428CJ revolution. Past Cats: '69 Std. Although the 390 had been offered in the Mustang, the FE had seen incarnations of up to 428 ci. What's the difference between a 428, a 428 Cobra Jet and a 428 SCJ? Or Reportedly, they didnt even let Tasca leave with the car. These cars ran the quarter-mile in the mid-11-second range, quick by any standard. i am putting the motor in a FORD 1972 short bed single cab pickup. Most of the published literature that I've read says that buyers of the locking 4.30:1 rear end gear also got a gear-driven Detroit Locker instead of Ford's clutch-packed Traction-Lok, but recent research leads me to believe that this is NOT the case! Cobra Make, Engine: Posts: 717. Because of this, '69 Mustang GTs are collectors' favorites. The basic strength of the Super Cobra Jet engine is in a more durable reciprocating assembly (crank, rods, pistons, wrist pins, flywheel/flexplate, and harmonic balancer) that was designed to withstand the higher RPM requirements of drag racing. It came in T-birds and full size Fords in the late 60's and early 70's. difference in 428 blocks? - Ford Truck Enthusiasts Forums I want to register an account for free right now! The birth of the Cobra Jet engine package from Ford was in response to external pressures. The big reason a 428CJ makes more horsepower and torque than a PI is the superior heads. When the Ford execs at their plant in Dearborn, Michigan saw Tascas KR-8 428 engine in person they were impressed. A police interceptor may have an "A". It appears that Ford went through at least three piston designs during the 428 CJ and SCJ production run to address durability problems. I've heard this could be a Cobra Jet but I've also heard this might not be the case. What makes the 428 Super Cobra Jet engine so super? the 429 Thunderjet was an amazing engine,in 1981 when I was 16 I bought a 69 4 door Thunderbird for $500and OMG, that was the most powerful engine ever,it would burn the tires until it shifted into third gear. By far and away the most common -- they made 100,000+ of these. Some SCJ block had the word "super" stamped on the rear. The later piston, which appears starting around December 1968, is marked "428" and "SUPER" (thanks to Randy Pollock for the picture), and differs from the earlier pistons by having additional metal in the pin boss area. The 390 big-block version of the Mustang ran fairly well--well enough to post mid-15-second times in the quarter-mile. Carroll Shelby, famous for his GT350 version of the Mustang as well as for the Cobra, became involved when he decided to produce a big-block version of his Shelby Mustang GT series. The 351 Cobra Jet was the final Cobra Jet engine that Ford released, and it lasted from 1971-1974. (REGISTERED USERS DO NOT SEE THIS POST/AD! 1999 - 2022 Scott A. Hollenbeck. Like the Chevy L-88 was 5 hp less than the trip set up Corvettes, because they lied their ass off to keep people from buying the L-88 who didn't know what they were getting into. 1968 through 1970 428CJ blocks were beefed up between the bores and main webbing areas for anticipated higher horsepower output. The 428 was available as a 68 1/2, 68 and 70 model. There was some overlap of the C and A markings on the rear block face which means many early CJ's have the A on the block while many police and pasenger 428 engines have the C marking. Ford initially created 50 base Mustangs (20 of which were factory lightweights) equipped with a 428CJ dressed in Wimbleton White, then delivered them to select Ford dealers nationwide to help spread the word on its new venomous creation. The 427 boasted 390 hp, a full 55 more than you-know-who. Though I've seen references to engineering numbers on flexplates, I've never actually seen any kind of stamped or cast number on a flexplate. The A blocks were made until mid 1968 model year. Chevrolet wasn't Ford's only problem in the performance department. You can also check the build dates on the parts as well because they did not start pitting them in production cars till about March of 1968. The Cobra Jet 428 motors in Mustangs used heads from the 427, plus other enhancements to really put some hair on their chest. 385cm = 151.6 inches. It is remembered by those who love the Ford Blue Oval, and feared by others who would challenge the cars bearing the Cobra Jet name. The Ford engineers kept the KR-8 so they could break it down and discover what made it so powerful. The 428 had a bore of 4.13" and a stroke of 3.98" and was produced from 1966 to 1970. It also had improved exhaust manifolds and a 735 CFM carb (a slightly modified 780 with different booster venruris). Craft notes that one significant change for 1970 was the inclusion of a rear sway bar for Cobra Jet Mustangs. Your email address will not be published. Component Identification | Mustang 428 Cobra Jet Registry A true Cobra Jet block will have a C cast in the back the block where the bell housing bolts up. Identified by the letter W in the fifth spot of the VIN, this early 1968 edition was the only 427 with hydraulic lifters, an iron intake manifold, a single point distributor, a smog pump (Ford's Thermactor system), an automatic transmission (the four-speed was not available with the 427), and optional air conditioning. In 1969, Ford created an even higher performance version, known as the 428 Super Cobra Jet. As old as it is, all the valves, springs, retainers, locks, shafts, rockers, etc, should be replaced with at minimum, OEM quality (readily available through "normal" engine parts sources). Ford advertised the 428 Cobra Jet's horsepower at 335 (10 less than the Thunderbird) with 440 lb-ft of torque, and whether those numbers were accurate or not they didn't push past the 390 far enough to generate more than passing interest from the Mustang crowd for its inaugural 1968 year. I won Winter Nationals at Beeline Dragway in DStock Class at 13:05 118 mph in 1970 with my 428 CJ Mach. The facts became clear once 428 CJ Mustangs and Fairlanes started running high 13s at the strip with zero preparation. (REGISTERED USERS DO NOT SEE THIS POST/AD! While the print ad boasted leading the way, the Cyclone CJ ended up closer to the middle of the pack in 1969, coming in 12th overall in factory supercar quarter-mile times published that year. Sadly, Ford discontinued the 429 Cobra Jet Mustang and other CJ-powered cars halfway through 1971. The difference was forged pistons, solid lifter cam and four bolt mains. The 428 was a 4.130 bore and a 3.984 crank. Basically, a 428 is just a stroked 390, and tuned for massive torque over horsepower. The original Ford Cobra Jets never made it past the 1970s, as increasing emissions restrictions and environmental and energy concerns ended up converging to squeeze the Cobra Jets out of existence. It was probably a case of "building out" soon-to-be obsolete 427 inventory. Now lets take a look at the various Ford Cobra Jet engines. Paul: Sorry to disagree. Success at the track meant success at the dealership, and Ford knew this. Because the NHRA used advertised factory horsepower and shipping weight claims to group vehicles into competition classes and categories, it paid to fib a little bit; 428 CJ-powered Mustangs and Fairlanes quickly became feared street and strip machines. What's the difference between a 428, 428 Police interceptor, and a Ford execs got the word. Many aficionados of the Cobra Jet Mustang consider the '70 version to be the nicest of all, combining the last year of the FE engine with the last year for the '69-'70 body style. The 429 is known as a 385 family due, I believe, to the bore size being 385 centimeters. 1999 - 2022 Scott A. Hollenbeck. The problem with the 427 was that it was far too expensive to produce for use in a regular production car. Super Cobra Jet harmonic balancer With a few minor modifications, however, the 428 would really scream, and by the time the '68s came around, Ford was ready to rock and roll. The cars ran very well and won in the Super Stock category that year. Hi Keiththis Ford Article isn't the best scan I've ever done but the article is very, Location: Abe Lincolns Birthplace, The 385-series 429 and 460 are also good street-strip engines, with their canted valves and large bearings. Whenever a differential with a gear ratio of 3.91:1 or 4.30:1 was ordered as an "optional axle ratio" at a cost of $6.53, a lot more than just lower gears came with the package. 390 and 428 are different. Never looked at or worked on any big block other than a 390. Chrysler had the 440ci RB wedge engine, not to mention the brutal 426ci hemispherical head motor known as the Hemi. Lastly, Ford engineers externally balanced the SCJ engine with a counterweight behind a different harmonic balancer because they removed the center counterweight on the crank. Why wouldn't an aluminum headed 351W be the best option -- then you don't have to change the rest of the driveline. Piston part numbers are marked (R) for red size and (B) for blue size to note options for selective fit based on normal production tolerances. While the engine was widely praised in car magazines for its performance, its large weight (720 lbs) was often chastised. The 429 is the same block as the modern 460 sold in Motorsport catalogs. 428CJ /SCJ cars used shock tower reinforcements, thicker front sway bars, and beefier springs and shocks. I have a set of stamps capable of stamping SCJ or Holman Moody or anything else you like into a block. To verify an original car, you can simply look at the vehicle identification number (VIN) on the dashboard. Ford Mustang Cobra Jet Engine - The History Of - MotorTrend Ford, realizing the sin of allowing the last Cobra Jet production engine to be the lukewarm 351 Cleveland Cobra Jet, finally revived the badging in 2008. With a bore and stroke of 4.36 X 3.59, the 429 has a larger bore but smaller stroke than the 428s. Cast iron exhaust manifolds. The SCJ timing pointer is slightly longer to clear the larger harmonic balancer. Although the Mustang had been completely redone, little changed in the CJ engine for 1969, and it was still available in any type of Mustang. Without a wink or a nod, Ford claimed the new CJ made 335 hp at 5,600 rpm and 445 lb-ft of torque at 3,400 rpm. YES! Carburetors Of The 428 - Dearborn Pit Stop Blog
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