1999 - 2022 Scott A. Hollenbeck. Cobra Jet Crankshaft (engineering number detail) 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. So instead, you have to examine the axle code on the door tag for a V or a W to verify its legit. The CJ had the good heads, cam but had the iron intake. 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. 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. 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. Makes you wonder how many were built at the other plants. In lieu of reverting back to the factory 428 head castings, Tasca put heads from the 427 instead. In 1969, Ford created an even higher performance version, known as the 428 Super Cobra Jet. 1969 and 1970 CJ vs. SCJ parts identification. A common misconception seems to be that SCJs were originally equipped with forged pistons and CJs were originally equipped with cast pistons. Chevrolet wasn't Ford's only problem in the performance department. The Cobra Jet 428 motors in Mustangs used heads from the 427, plus other enhancements to really put some hair on their chest. If you want to discover which 428 Cobra Jet powered Fords were the fastest muscle cars, how the engine originated, which vehicles had it, and how the 428CJ differs from the 428SCJ, then read on. In 1958, Ford introduced their first line of big block motors, known as the Ford FE engines. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. valves), and the valves were closer together than on other FE heads so that the CJ . 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 428CJ was available in nine Ford, Mercury, and Shelby muscle car models between 1968-1970. Starting in 1966, you could also get a 428 Police Interceptor (only sold to police entities). Ford 428 Cobra Jet Engine Block & Cylinder Heads When the Ford execs at their plant in Dearborn, Michigan saw Tascas KR-8 428 engine in person they were impressed. Midway through the 1967 model year, the 427 was swapped out for a newer 428 Cobra Jet engine equipped with a Holley four-barrel carburetor. 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. The Ford 427 became immortalized in 1966, when Ken Miles piloted it during the 1966 24 Hours of Le Mans (later chronicled in Ford v. Ferrari). If you have, please consider sharing your information and pictures, if possible. The 429 was not produced until 1969. 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. Wow, look at me actually providing an answer instead of asking questions all the time! 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! p.s. The difference in displacement between the two was achieved via stroke, with the 429 checking in at 3.590 . Ford released a few high performance variants of the 429, including the Boss 429 and the Cobra Jets. You can use the 428 crank in the 390 block and will end up with 410 cubic inches (Ford actually had a 410 for a couple years). 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. An improved crank and rods were also part of the deal. In April 1968, Ford released its own version of the 428 engine and called it the Cobra Jet.. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. The largest was the 390 cid, which Ford first brought out in 1961. Some original SCJ blocks were stamped "super" on the front; if present, this marking was likely there to tell the original engine assemblers to use SCJ internals when building the engine (here's an example of such a stamping courtesy of Randy Pollock). Ford introduced their second generation of FE V8 big block engines in 1962 with the 406 cid big block. Actually, about 400 hp were on tap in this incarnation of the 428. Yet, in 2008, Ford brought back the Cobra Jet badging for its 40th Anniversary. Instead of a Cobra or Super Cobra Jet engine, the new Mustang Cobra Jets feature modified existing production engines. In the quarter-mile, a one-second difference is a lot of car lengths. Of course there's the Boss 429, but thats a horse of completely different color. They did have a few XR7-G Cougars built that came with the first factory retractable sunroof though! The '69-'70 Mustangs were nearly identical cars featuring minor cosmetic changes. 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 Mustang still used small blocks in their engines, with the 289 cid being the largest available. The 1969 Ford Fairlane Cobra was a 1969-only option and was available in either a Formal Roof Hardtop or a Fastback form. Also, 1969 was the last year of production for the famous Mustang GT. Increased Ebay value in a few strokes of a hammer! The 429/460 is going to be the cheaper of the engines to build. Mixing SCJ and CJ parts can cause severe balance problems. The Super Cobra Jets got forged aluminum pistons and higher performance camshafts, as well as a high-rise intake manifold. YES! These were sold as part of the Drag Pack option. 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". 428cj vs 460 | 460 Ford Forum Mustang buyers who selected either of the optional 3.91:1 or 4.30:1 rear end gear ratios got more than just an optional axle ratio! 1970 Ford F100 2WD SB 447 Strokered FE w/ T19 Bullitt390 New Member To verify an original car, you can simply look at the vehicle identification number (VIN) on the dashboard. 428 cobra jet vs. 460. i was wondering if a 428 cj or a 460 would be a better engine for a street rod. 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. Sadly, Ford discontinued the 429 Cobra Jet Mustang and other CJ-powered cars halfway through 1971. Credit: CarsRememberWhenAutoSales/Wikipedia. But as the 1,500 whp 2020 Ford Cobra Jet showed, that might not be a terrible thing. Yikes, that's huge! Register now for free! 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. Though different part numbers were used for standard sized CJ and SCJ pistons (perhaps to provide slightly different installation tolerances), most folks that I've talked to believe that the pistons were in fact identical. the 428 CJ. 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. Ranging from common problems info to performance modification guides, we cover everything muscle car. Well, there you have the top 8 fastest 428 Cobra Jets. Two codes designated a CJ: the R code specified a Ram Air vehicle, while the Q code meant no Ram Air. . I was wondering if anyone knows the difference between a regular 428 block and a 428 Cobra Jet block. By 1975, the Ford Cobra Jet had ceased to exist in production. In various incarnations ranging from 332 ci all the way up to the 428, the FE was the heart and soul of many winning Ford-powered automobiles. Instead, Tasca Fordthe second-largest Ford dealership in the world in the 1960sinspired the 428CJ revolution. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. important]cars[/COLOR] will have heads with the smaller valves and a lesser highway friendly springs . Most estimates put the 1968 Ford Cobra Jet 428s at north of 400 horsepower. The 428 is a 1969 block no heads. The Ford engineers kept the KR-8 so they could break it down and discover what made it so powerful. A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. YES! 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. Note that the reinforcement bracket used with the Super Cobra Jet horn arrangement appears to have been used only during the 1969 model year. To date I've only seen documentation for one such anomaly: 9R02R103630, built with a W-code 4.30:1 rear axle and a standard CJ engine. chuck, The same naming convention was applied to the 429 engine as well. 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 Fora platform includes forum software by XenForo. Difference between a 390fe and 428fe? - Club Cobra The facts became clear once 428 CJ Mustangs and Fairlanes started running high 13s at the strip with zero preparation. In four years of its existence, the Cobra Jet name became synonymous with high-performance. In fact, Ford had seen the writing on the wall. By 1974 the emissions crap that was added to the engine killed the power. For example, the SCJ used race-proven 427 "LeMans" capscrew connecting rods with shorter bolt heads, whereas the standard CJ rod used a more common press-fit bolt and nut to retain the rod cap. Fords Cobra Jet engines rivaled high output big blocks from General Motors and Chrysler, and finally made some Mustangs worthy of being called muscle cars. The new Mustang was beautiful, and it had a large enough engine bay to take the big mill. stronger. 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. Actually, rebuilding a 428 using modern methods costs significantly MORE than $2,500. Upgrade available to low restriction ram air (seal to hood) and "shaker" hood with hot/cold start-up system, Larger bolts; SCJ had material addedto outside of big end, Retuned damper for strengthened crankshaft, Revised valve springs for higher valve toss speed (6700 RPM), Improved material with modified, polished backside fillet radius, Unique adapter with oil in and oil out provisions for external oil cooler (SCJ only), Unique high (90%+) nodular iron with 10,000 RPM burst strength; high RPM clutch assembly, Higher relief valve pressure, unique oil filter adapter, and external oil cooling (SCJ only), Automatic and manual transmission available, Automatic and manual transmission available. We have 2 blocks here-both are 428s but one has some additional webbing on the main bearings. Say Cyclone CJ. Yet, Ford did not use any of the second generation big blocks in pony cars like the Mustang at first. 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 All 428's had 2-bolt mains also. The C marking on the rear face of blocks predated the CJ era. The real cobra jet block had reinforced webbing as well as a higher nickel content, i.e. ). Even less common with a production of maybe 3,000.
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