The 715 was a Ford replica of a Rochester carb, and was fitted to the base Cobra Jets. The PI ran stock 390/428 heads, an aluminum intake, the same cam as the CJ and a 600 CFM carb. 1969 Cobras are often mistakingly called Torino Cobras, which didnt appear until 1970. 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. Lets look at the differences between a 428 Cobra Jet and the 428 Super Cobra Jet engine, shall we? The problem with the 427 was that it was far too expensive to produce for use in a regular production car. The 1967 Shelby GT500 featured a new 428 cid engine that had been used in the Thunderbirds and Galaxies. From 2008-2012, Ford used a supercharged version of their 5.4 L Modular V8. The fifth digit in the VIN on any Ford from 1968-1970 tells you whether or not a vehicle came with this engine or not. The 1969 Ford Fairlane Cobra was a 1969-only option and was available in either a Formal Roof Hardtop or a Fastback form. (REGISTERED USERS DO NOT SEE THIS POST/AD! All of the new Ford Cobra Jets are supercharged, except the Cobra Jet TT from 2013 that has twin-turbos. As we all understand, the 390 wasn't standing up to the 396, and sales reflected this. 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! The C marking on the rear face of blocks predated the CJ era. 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 . Mixing SCJ and CJ parts can cause severe balance problems. It was available in the new Camaro in 325-, 350-, and 375hp forms (a 425hp version had been available in the Corvette for '65). Ford discontinued the 429 Cobra Jet and Super Cobra Jet options after 1971, largely due to the increasing emissions restrictions. 1968 was the only second year of the Cougar, which only received minor revisions, including side marker lights and front shoulder belts. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. The differences for the SCJ were: 1) The beefer 427 "LeMans" connecting rods. Four decades after its initial release, and 34 years after it was discontinued, Ford brought back the Cobra Jet badge in 2008. Carroll Shelby, Bob Tasca, and the Hybrid 427/428 Engines, Best Ford Fox Body Mustang Performance Upgrades. Your email address will not be published. That didnt happen until 69. These were sold as part of the Drag Pack option. 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. There was a special designation in the database to tell which cars had these installed". It was fortuitous that Tasca Ford nudged Fordand Ford listenedbecause the 428 Cobra Jets and Super Cobra Jets are amongst the baddest Ford Muscle Cars you could drive off the lot from 1968-1970. 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. A different crankshaft and forged-aluminum pistons were also included. 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. Ford gave the electric Cobra Jet its name because it produces 1,400 horsepower and 1,100 lb-ft of torque. But it was the Camaro-Firebird that joined the Mustang in the ponycar class. A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. The 429 is a 70 complete out of a Lincoln or some other 4 door. The SCJ block is the same as a CJ. The Ford engineers kept the KR-8 so they could break it down and discover what made it so powerful. Wow, look at me actually providing an answer instead of asking questions all the time! Combined with their burgeoning competition with the new Chevy Camaro, Ford decided to put a modified 428 heavily based on Tascas 428 into the Mustang for 1968. The Ford Cobra Jet and Super Cobra Jet were introduced in 1970, and they were improvements over the 428s. 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. What's the difference between a 428, a 428 Cobra Jet and a 428 SCJ? Or Introduced in 1958 for service in fullsize Fords as well as the Thunderbird, the FE had seen a long and colorful career. Last edited: May 19, 2013 FrozenMerc, May 19, 2013 SHARE POST #3 hoop98 Member The factory ratings were intentionally low for insurance reasons. This explains why Ford went with the 390 in the Mustang instead of the 427. The 428 Cobra and Super Cobra Jets continued for 1970, but there was also a new 429 Cobra Jet now. 428 cobra jet vs. 460. i was wondering if a 428 cj or a 460 would be a better engine for a street rod. In its August 1968 issue, Motor Trend Magazine reported a 13.86-second ET, traveling at 101.69 miles per hour. Crankshaft | Mustang 428 Cobra Jet Registry the 428 CJ. Basically, a 428 is just a stroked 390, and tuned for massive torque over horsepower. Cast iron exhaust manifolds. For this family of motors, the SCJ actually got four-bolt mains and then there was that same 5 horsepower difference. 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 Also, 1969 was the last year of production for the famous Mustang GT. 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. But of course, it was too late to change the name. George Anderson of Gessford Machine was kind enough to point me to a page from Ford's "Muscle Parts Description and Interchange" book, a supplement to the original "Muscle Parts" catalog that was published in July 1970, that clearly states that "all 428 engines use "dished" cast aluminum pistons with two sets of eyebrows cast so they can be used in right or left bank". But there are other types of 428's and 429's floating around out there, built for different purposes, i.e. I bought a 72' Thunderbird yrs ago it was still pretty powerful. 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. I want to register an account for free right now! Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. Compression was either 10.5:1 or 10.6:1, with 10.6:1 taking over from 1969-on. I've seen written reference to a C9AE-C rod also being used, but I've never been able to confirm an installation. 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. Grue up with Ford FE. Pictures of some of these parts can be found in the component identification section of this web site. I was wondering if anyone knows the difference between a regular 428 block and a 428 Cobra Jet block. The Model T has long been considered one of the greatest manufacturing feats in modern history, and Fords flathead engine transformed V8s for the future. The facts became clear once 428 CJ Mustangs and Fairlanes started running high 13s at the strip with zero preparation. The C blocks started to be used in mid 1967 before the CJ production started. Comparison of Major 428 Engine Components, 1968 428 Cobra Jet Drag Strip Modifications, 428 CJ Mustangs at the 1968 NHRA Winternationals, Classic Mustang Warranty Plate/Certification Label Decoder, Cast iron, similar to PI with revised carburetor bore risers, relocated carburetor pad, and radiused riser to upper and lower logs to improve fuel/air distribution, Production 390 GT cast iron light car manifolds, Redesigned high flow, low restriction unique to the 428 CJ, Redesigned dual inlet with hot/cold start-up system. The 429s are also known as the 7.0 Lima V8s, due to their metric displacement. 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. In the 1969 Supercar Annual magazine, one ran a 13.94-second quarter-mile time, traveling 101.7 miles per hour. Ford 7-Liter Engines Deciphered: 427, 428, 429 | Themustangsource 1969 and 1970 CJ vs. SCJ parts identification. The cast iron intake manifold was a high-rise style, which was exceedling heavy at 90 lbs. The Thunderbolt proved to be a very fast factory team drag racer--and proved again that the FE engine could be a formidable competitor. The W-code 427 and 428 CJ shared just about everything except main bearing caps and bore/stroke dimensions. The difference was forged pistons, solid lifter cam and four bolt mains. Dr. Please notethe 428 and 429 are completely different classes or families of engines. Reportedly, they didnt even let Tasca leave with the car. 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. The following year, the Super Cobra Jet became an option. 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 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. difference in 428 blocks? - Ford Truck Enthusiasts Forums The Ford Cobra Jets are some of the most iconic engines in Ford history, and have been since their release back in 1968. FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - difference in 428 blocks? In addition, the Spoiler II was available in either a red or blue paint schemehonoring legendary NASCAR drivers Cale Yarborough and Dan Gurney, respectively. A forum community dedicated to Mercury Cougar owners and enthusiasts. According to Ford themselves, independent dynos showed electric Cobra Jets making north of 1,500 wheel-horsepower. In 1958, Ford introduced their first line of big block motors, known as the Ford FE engines. 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. Yikes, that's huge! Ford quickly caught the vision, and before the drag-ready Mustang returned to Tasca Ford, Ford Engineers removed it from the vehicle so they could reverse engineer it for mass production. All this was none too soon. (The hood scoop works.) While the engine was widely praised in car magazines for its performance, its large weight (720 lbs) was often chastised. : For registered members this ad will NOT show, Cobra Make, Engine: Unique Motorcars (sold). For the most recent 2018 Ford Cobra Jet, Ford used their modified Coyote variant, the 5.2 L Voodoo. As with most deceptions, the ruse was quickly unmasked as the NHRA factored the 428 CJ into higher classes so it couldn't bully weaker machinery. However, a 4-speed option was also available. All FE dampers are neutrally balanced, so all can be interchanged between motors if you understand the pulley requirements. The 406 was a serious development for Ford, as it catapulted them to NHRA and NASCAR victories in the mid-1960s. A remedy was in the making, as the 428 Cobra Jet package for the Mustang began its metamorphosis. Not only is the 1968 Mercury Cougar XR7-GT the fastest factory Cobra Jet on this list, but it is also the fastest muscle car of 1968much to the chagrin of Mustang, Torino, Fairlane, Cyclone, and Montego owners everywhere. The Cobra Jet version of the 351 Cleveland was one of four 351 Clevelands Ford released that year. 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. I've heard this could be a Cobra Jet but I've also heard this might not be the case. stronger. The connecting rod journal diameter measures between 2.4380 and 2.4388 inches. Instead, Tasca Fordthe second-largest Ford dealership in the world in the 1960sinspired the 428CJ revolution. 428 Cobra Jet History, by Bill Barr Bought a new 69 Mach 1 and ran at the strip w best et 12.72. Required fields are marked *. It was built only in 1970-71. Another Dumb Question: 428CJ vs 428SCJ - Club Cobra It was only installed in mid-size (1970-71) and pony cars (1971 only). Even in 2022, almost six decades later, the Ford Cobra Jets are still lusted over today by generations of gearheads. Past Cats: '69 Std. 428 CJ's came in the 69 so it would be more correct as far as appearance goes. Note that there is no mention of the Detroit Locker in the 1969 description, but it's clearly listed in the 1970 description. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. Besides the T-Bird, there were Galaxies, Thunderbolt Fairlanes, Mustangs, Torinos, and both the AC Cobra and GT 500 Shelbys. I am a 351W guy. Cast iron exhaust manifolds. The 428CJ was available in nine Ford, Mercury, and Shelby muscle car models between 1968-1970. I have a 428 FE engine in my car from back in the day (60's). 1970 Ford F100 2WD SB 447 Strokered FE w/ T19 Bullitt390 New Member Ford created a few high performance variants of the 429, the Boss 429 and the 429 Cobra/Super Cobra Jets. We have 2 blocks here-both are 428s but one has some additional webbing on the main bearings. Some SCJ block had the word "super" stamped on the rear. 427, 428, 429!!! Would someone please explain the differences of these The 428, on the other hand, has a smaller bore and longer stroke producing more torque and is well-suited to street-strip action.