While 1299 may seem like a lot( compared to the lightweight Galaxies, Thunderbolts, 427 Fairlanes and Boss 429's) it is a small fraction of the numbers . The 429ci Cobra Jet was a different entity entirely. During the 1970 model year, "DETROIT LOCKER DIFFERENTIAL" appears on the invoice of vehicles that came with a factory Detroit Locker. The full-page print ad for the 1969 Mercury Cyclone CJ stated it best: Cyclone CJthe high-performance fastback with the bold build and sports car spirit. From 2008-2012, Ford used a supercharged version of their 5.4 L Modular V8. 1968 428 Cobra Jet Drag Strip Modifications 428 CJ Mustangs at the 1968 NHRA Winternationals Drag Strip Performance The Straight Scoop on "Canadian" Heads Engine Information 428 Cobra Jet History, by Bill Barr 428 Cobra Jet vs. 428 Super Cobra Jet Comparison of Major 428 Engine Components Component Identification Engine Identification Codes By 1974 the emissions crap that was added to the engine killed the power. 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. The heads and intake were unique to the 428CJ. After some break-in miles, we'd likely see 375 hp and, with headers, yes, very likely 400 ponies. The baddest of them all is the Boss 429. : For registered members this ad will NOT show, Cobra Make, Engine: Unique Motorcars (sold). 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. Ford released the original 428 in 1966, and in 1968 the Cobra Jet variant was born. Compression was lowered from 10.7:1 to 9.0:1, and in 1971 it actually made 5 horsepower less than the standard 351 at 280 horsepower. In 1964, the 427 was shoehorned into the Fairlane, Ford's midsized entry, between the Galaxie on the big end and the Falcon on the small. These were sold as part of the Drag Pack option. Mustang 428 Cobra Jet Service Parts Oil Level Indicator (Dip Stick) Oil Pan and Windage Tray Oil Pump Pistons Power Steering Fluid Cooler Power Steering Pump Radiator Radiator Cooling Fan Radiator Cooling Fan Shroud Radiator Fan Clutch Rear U-Joint Flange Reverse Lockout Rod (1970) Shock Tower Reinforcements Speedometer Gear Adapter A limited number of Cobra emblems placed strategically on the exterior warned people what lurked under the hood. Two-bolt main block Between 345-360 horsepower 428 Super Cobra Jet Internal structure differences included Lemans type cap screw rods The capscrews were shorter than the 427's to clear the block Externally balanced External engine oil cooler Here is some 429 info I gleaned off the net: First was the base 429, known as the Thunder Jet (TJ). although the fastest factory car i have ever been in was and is to this day the 68 428scj mustang, and those cars are cars of record winning the 68' winternationals against the Hemi cars. the 428 CJ. 1970 Ford F100 2WD SB 447 Strokered FE w/ T19 Bullitt390 New Member stronger. Ford introduced their second generation of FE V8 big block engines in 1962 with the 406 cid big block. Still, a '71 'Jet had a 0-60 time of 6.5 seconds and a quarter-mile time of 14.1 seconds, so it was no snail. The 427 boasted 390 hp, a full 55 more than you-know-who. Unlike the 351, Ford based the 428 Cobra Jet and Super Cobra Jets on the FE series of engines. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. 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. Also i was wondering if you hopped them up which one would have more horsepower and which one you could rebuilbd for less money, and which one would be less maintenance? The chambers were open head, which helped with emissions, and Ford fitted the Autolite/Ford 4300-D 750 cfm 4bbl carburetor to it. In 1958, Ford introduced their first line of big block motors, known as the Ford FE engines. The error is described on the owner's Marti report; here's an excerpt. Whenever a . It was powered exclusively by a 428 in either CJ or SCJ fashion. Super Cobra Jet harmonic balancer 390 and 428 are different. The 428 had a bore of 4.13" and a stroke of 3.98" and was produced from 1966 to 1970. 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. 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. Ford really got it right with the 1968 428 Cobra Jet (CJ). In the 60s-70s, Ford put the Cobra Jet and Super Cobra Jet engines in Mustangs, Thunderbirds, and of course, Cobras. The two-barrel 390 was good for 265 horsepower, the four-barrel stepped up to 325, and the Cobra Jet 428 provided just ten additional horses but a fair torque boost to go with it. The birth of the Cobra Jet engine package from Ford was in response to external pressures. The Cobra Jets had three bolt caps instead of four like the Boss, and also did not have the screw-in freeze plugs like the Boss. While the engine was widely praised in car magazines for its performance, its large weight (720 lbs) was often chastised. No other numbers are CJ. Royce: thanx for the clarification. I want to register an account for free right now! The most iconic are probably the Ford Cobra Jet Mustangs, which won numerous drag racing championships. The big difference was the price (at $622, the 427 cost $188 more than the $434 428 CJ), transmission availability (the 427 was only teamed with the C6 automatic), carburetors (the 427's single Holley four-barrel rated 600 cfm, 135 less than the 428 CJ), and rated output. Right to the end in 1970, the 335hp rating stuck. Reportedly, Ford plans on getting even crazier with the electric Mustang Cobra Jet, shooting eventually for one that can hit the quarter-mile in less than 7 seconds. The 396 featured advanced-design, canted-valve cylinder heads that flowed like crazy and earned the name "porcupine" because of their splayed-valve arrangement. Dr. They were almost identical to the standard Cobra Jets, but had stronger internals. The Boss and Cobra Jets had the same block with four bolt mains, short skirts, and thin wall castings. ID'd by D0VE-A and D1VE-AA casting numbers on the block and D0OE-R on the heads. A true Cobra Jet block will have a C cast in the back the block where the bell housing bolts up. Nineteen-seventy was the last year for the venerable FE-series big-block engine in the Mustang and Cougar. Super Cobra Jet horn detail (note the jumper wire and reinforcement bracket) 1973-1974 351 Cobra Jets had smaller valves, which resulted in a drop in horsepower on some models to 245. YES! 22 Though some claim the 428 CJ actually made in excess of 400 hp, we observed 365.1 hp at 4,800 rpm, almost 10 percent more than advertised. Not too common, maybe a total production of 15,000. As referenced earlier, the 390 was a 4.050 bore and a 3.781 crank. Never looked at or worked on any big block other than a 390. The immaculate 1968 427 seen here powers Craig Keith's Cougar XR-7G and resides in West Brookfield. Its outstanding showing, including a first place finish, and immediate fan reaction prompted Ford to put the engine in production Mustangs. Its not very well known, but Ford also branded another Cobra Jet from 1971-1974 the 351 Cleveland. The back of the CJ block should have a "C" cast or welded into the back of it. They did so to honor the 1968 Mustangs that won the NHRA Winternationals, and inaugurated the first Cobra Jet era. The 1975 MPC clearly notes that the 1969 and 1970 radiator core supports were serviced using two different part numbers (C9ZZ-16138-A and D0ZZ-16138-A); the report I have is that the 1970 support is shaped in such a way that the bracket doesnt fit and isnt needed. . document.getElementById( "ak_js_3" ).setAttribute( "value", ( new Date() ).getTime() ); Get Your Top 50 Fastest Muscle Cars ChartFREE! It's important to note that all other components of the SCJ engine do in fact interchange with the CJ engine. The package included special capscrew-type connecting rods borrowed from the Ford GT Mark IV 427 Le Mans engine. Note that there is no mention of the Detroit Locker in the 1969 description, but it's clearly listed in the 1970 description. Connecting rod research seems to indicate that CJs used a variety of common high-end FE rods, with the C7AE-B rod being fairly common. Bought a new 69 Mach 1 and ran at the strip w best et 12.72. Basically, a 428 is just a stroked 390, and tuned for massive torque over horsepower. The 428SCJ used 427 LeMans connecting rods and different pistons, crank, wrist pins flywheel/flexplate, a cast-iron Police Interceptor intake manifold, and an engine oil cooler. Wow, look at me actually providing an answer instead of asking questions all the time! FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - difference in 428 blocks? 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. 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. If you don't put the 428 in it you should get a 460 instead of the 429 for even more power. Sorry, here's the other page. There have been eight new models since then, culminating in the 50th Anniversary Cobra Jets for 2018. To verify an original car, you can simply look at the vehicle identification number (VIN) on the dashboard. According to the excellent Boss and Cobra Jet Mustangs by Dr. John Craft, this is how the Cobra Jet was born. Good luck. In 1967, this changed when they put the first generation 390 big block in the Mustang. Most estimates put the 1968 Ford Cobra Jet 428s at north of 400 horsepower. The new Mustang was beautiful, and it had a large enough engine bay to take the big mill. The Ford 428 Cobra Jet was the high-performance version of the 428 FE engine, quickly overtaking the low-revving 390 CID V-8 as the high-performance powerplant of choice. The stage was set, and war was waged in earnest. Factory horsepower and torque ratings were the same for both CJ and SCJ engines. Register now for free! While the torque claim was in line with expectations, many wondered why the big 428 CJ was only 10 ponies ahead of the 325hp 390 GT four-barrel mill. This is an internally ballance assy . There have been rumors of cars being delivered with SCJ engines and other axle codes, and V- or W-code axles and no SCJ engine. Whereas Shelby had scrapped plans to redesign the 428s intake manifold a notorious choke point Tasca came up with a different idea. 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. http://www.clubcobra.com/forums/fe-talk/10782-another-dumb-question-428cj-vs-428scj-whats-difference.html, https://www.hemmings.com/magazine/hmn/2009/04/Ford-429CJ-and-429SCJ-V-8/1796187.html. But, from the factory it was never as powerful as the (solid lifter) 427. Of course there's the Boss 429, but thats a horse of completely different color. Massachusetts. 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. In April 1968, Ford released its own version of the 428 engine and called it the Cobra Jet.. But there are other types of 428's and 429's floating around out there, built for different purposes, i.e. First you have to start with the 428 v.s. Four decades after its initial release, and 34 years after it was discontinued, Ford brought back the Cobra Jet badge in 2008. Although these cars were slightly different than what would shortly be on the showroom floor, word was out that the Cobra Jet package was the way to go. That didnt happen until 69. Kevin later explicitly confirmed that "Ford did not produce 69 4.30 vehicles with Detroit Lockers. But, for many, it was far too inconspicuous for them to realize it before seeing its taillights. It was rated at 375HP (grossly underrated). Carroll Shelby, Bob Tasca, and the Hybrid 427/428 Engines, Best Ford Fox Body Mustang Performance Upgrades. Ford execs got the word. "A standard 428 will have a U1 crankshaft ballanced on the inside of the ballancer but weight added on crankshaft . A different crankshaft and forged-aluminum pistons were also included. Ford countered by introducing the FE-series 390ci V-8 engine for the '67 Mustang. Starting in February 1969 this complete package could be ordered as the "Drag Pack" option. There was also the optional Ram-Air induction system that featured a newly designed air cleaner to draw in the coolest air possible, which was available for both models. Note that the explanation says that three other cars were built like this at San Jose! 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. Craft notes that one significant change for 1970 was the inclusion of a rear sway bar for Cobra Jet Mustangs. Instead of a Cobra or Super Cobra Jet engine, the new Mustang Cobra Jets feature modified existing production engines. In third place is the 1969 Ford Mustang Mach 1. Increased Ebay value in a few strokes of a hammer! 1968 was when the Cyclone lost its affiliation with the Comet nameplate, a good move considering it was on its way out entirely by 1969. Welcome to Club Cobra! Note that the reinforcement bracket used with the Super Cobra Jet horn arrangement appears to have been used only during the 1969 model year. 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 rotating assemblies between the Cobra Jet and Super Cobra Jets are different, and mixing them leads to balance issues. Chevrolet wasn't Ford's only problem in the performance department. The CJ got the standard damper of '68-'76. A police interceptor may have an "A". 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. Over the years, Ford has produced some incredibly iconic cars and engines. The C blocks started to be used in mid 1967 before the CJ production started. This field is for validation purposes and should be left unchanged. It appears that Ford went through at least three piston designs during the 428 CJ and SCJ production run to address durability problems. In the March 1968 issue of Hot Rod magazine, a 68 Mustang CJ ran a 13.56-second quarter-mile time, traveling at 106.6 miles per hour. Yet, Ford did not use any of the second generation big blocks in pony cars like the Mustang at first. Enter Bob Tasca, a Ford dealer who had a history of experimenting with Ford big-blocks for his dealership-sponsored race cars. Holley 735 CFM 4V (780 CFM modified with FT (Ford Truck) booster nozzles for improved atomization and emissions), 1.75" x 1.75" primary and secondary bores. Ford 428s had a different water jacket core which can often be identified by the "428" cast in the bottom of the inner water jacket right under the center freeze plug. Super Cobra Jet harmonic balancer counter weight, 2 The Q-code Cobra Jet 428 was rated at a very conservative 335hp @ 5600rpm. Lots of people have different opinions about the "Drag Pack" option described above, what it included, and which cars it was available for. Pioneered in 1967 as a stripped-down Holman and Moody prepared drag-ready Mustang for Tasca Ford, the 428 short block with 427 heads christened the KR-8 flawlessly balanced proven race engineering with factory Ford parts. I have a 69 428 SCj hardtop, and the word SUPER is stamped (not cast) onto the flat surface behind the head on the right of the engine. Cobra Make, Engine: Everett-Morrison LS1, IIRC look at the exhaust manifold bolt pattern-------------the 390GT and 428CJ had a different bolt pattern (had some more holes and an tab on the head for the pattern--the standard engines only had the vertical pattern with a bolt at top and bottom of port, Cobra Make, Engine: Kellison Stallion 468 FE, Cobra Make, Engine: Kirkham 427 brushed aluminum with Keith Craft 527C.I. Ranging from common problems info to performance modification guides, we cover everything muscle car. They were the be-all and end-all of rods back in the sixties, but metallurgy has far surpassed them today. Twenty three years later 1992 bought a 289 GT Coup but soon installed a FE with cylender head mods and solid roller cam have ran a best 1.33 60 foot and a 6.39 eighth mile. Everyone at Ford was confounded, and the brass didn't want to go back to the 427 because of the high cost of its heavy-duty internal components. For the most recent 2018 Ford Cobra Jet, Ford used their modified Coyote variant, the 5.2 L Voodoo. The Ford Cobra Jets are some of the most iconic engines in Ford history, and have been since their release back in 1968. The 335hp rating was nothing more than a ploy to distract the NHRA from the CJ's true ability, in hopes of getting more advantageous classifications in Stock and Super Stock competition. Most of the differences have been listed except for one major difference. Super Cobra Jets also had oil coolers as standard, which were options for the Cobra Jets.
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