Also does the cj have a lot of low end. The 428 Cobra and Super Cobra Jets continued for 1970, but there was also a new 429 Cobra Jet now. The Ford 428 Super Cobra Jet was only available in the 1969 and 1970 model years. 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. Ford based the 429 Cobra Jets on their 385 series of V8 engines. The Cobra Jets are very similar to the standard 428s, with only minimal upgrades for better performance and reliability. FE guys: Difference between 427 and 428 Cobra Jet? But as the 1,500 whp 2020 Ford Cobra Jet showed, that might not be a terrible thing. 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). I have a 428 FE engine in my car from back in the day (60's). In fourth place is the 1968 Mercury 428 Cyclone GT. The engine was widely praised for its performance and design, and it was by far the most powerful Ford production motor available. A police interceptor may have an "A". 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. 1968 was the only second year of the Cougar, which only received minor revisions, including side marker lights and front shoulder belts. Common to both were vital details such as camshafts, intake manifolds, valve and port sizes, and compression ratios. Its outstanding showing, including a first place finish, and immediate fan reaction prompted Ford to put the engine in production Mustangs. It's important to note that all other components of the SCJ engine do in fact interchange with the CJ engine. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. As it turned out, the 427 heads massively improved both low-end torque and top-end power on 428. For the most recent 2018 Ford Cobra Jet, Ford used their modified Coyote variant, the 5.2 L Voodoo. With a bore and stroke of 4.36 X 3.59, the 429 has a larger bore but smaller stroke than the 428s. 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). The 715 was a Ford replica of a Rochester carb, and was fitted to the base Cobra Jets. Welcome to Club Cobra! 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. Get The Top 50 Fastest Muscle Cars chart. Sunroof has a big brain. These were sold as part of the Drag Pack option. Grue up with Ford FE. In addition, the Spoiler II was available in either a red or blue paint schemehonoring legendary NASCAR drivers Cale Yarborough and Dan Gurney, respectively. He had been involved in the Thunderbolt program back in 1964. When the Camaro hit the streets with a 396ci engine borrowed from the Chevelle parts bin, Ford knew it had competition. Component Identification | Mustang 428 Cobra Jet Registry What's the difference between a 428, 428 Police interceptor, and a I was wondering if anyone knows the difference between a regular 428 block and a 428 Cobra Jet block. Also, the stroke on a 428 should be 3.98. 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. Ranging from common problems info to performance modification guides, we cover everything muscle car. But times were changing, and sales were soft for performance cars across the board, and not just at Ford. The 429 SCJ was a stronger version on the CJ. However, it wasn't Ford Engineers that first developed this impressive powerplant. 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. In fact, the 428 was listed at 335 hp, the same as the 390. If the 69 428 is the real deal buy it. Incredibly, he too put a 428 cid block in his Mustangs, but he took it a step further than Shelby. Cobra Jet engines received low-riser heads with a "rough-cast" combustion chamber (2.09int.-1.66ex. The stage was set, and war was waged in earnest. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. The heads and intake were unique to the 428CJ. However, the Ford production database describes the car as having an S-code 3.50:1 traction-lok rear. The cars ran very well and won in the Super Stock category that year. 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. The 1967 Shelby GT500 featured a new 428 cid engine that had been used in the Thunderbirds and Galaxies. 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. The facts became clear once 428 CJ Mustangs and Fairlanes started running high 13s at the strip with zero preparation. And this dealer-inspired Ford racing engine couldnt have appeared at a better time for the Ford Motor Company. After that nothing but C blocks were made. Super Cobra Jet Crankshaft Pictures of some of these parts can be found in the component identification section of this web site. A lot of people try to pawn off a 390 as a 428. the blocks are nearly identical and the stroke is close. The big-block Chevy had the edge in breathing ability, but this move closed the gap between the two engines a great deal. Cast iron intake manifold identical to the aluminum one on the police interceptor. What makes the 428 Super Cobra Jet engine so super? stronger. 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. all aluminum FE, Check the intake casting number, the head casting number and if the heads are of the bore and stroke. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. According to Ford themselves, independent dynos showed electric Cobra Jets making north of 1,500 wheel-horsepower. The new 2008 Ford Cobra Jet Mustangs were built strictly for the drag strip, so they werent even given VINs. Even an external oil cooler was part of the deal--not bad for $6.53. I've heard this could be a Cobra Jet but I've also heard this might not be the case. Either way, you can be guaranteed it will be a monster at the drag strip and not be lacking for power. I spoke to Rob Celedon the other day and his SCJ car has the same stamp on the block. Certainly the 428 was a torque machine, and if you had enough carburetor for about 5,000 rpms, that was about as fast you needed to spin that engine anyway. It was probably a case of "building out" soon-to-be obsolete 427 inventory. 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. 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 406 was a serious development for Ford, as it catapulted them to NHRA and NASCAR victories in the mid-1960s. Ford created a few high performance variants of the 429, the Boss 429 and the 429 Cobra/Super Cobra Jets. For improved high speed reliability, the SCJ used the . 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. This field is for validation purposes and should be left unchanged. The problem with the 427 was that it was far too expensive to produce for use in a regular production car. By 1975, the Ford Cobra Jet had ceased to exist in production. Regarding the 428, it also matters if the block is a true CJ block or a police interceptor block. I bought a 72' Thunderbird yrs ago it was still pretty powerful. Note that the explanation says that three other cars were built like this at San Jose! This is an internally ballance assy . The heads ID themselves. Cobra Make, Engine: Posts: 717. 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 406 was essentially a bored 390, and in 1963 Ford went even bigger and bored the 406 out to 427 cid. Not Ranked. Unlike the 351, Ford based the 428 Cobra Jet and Super Cobra Jets on the FE series of engines. 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. The rest of the info is the same. Beyond that, the so-called Thunderbird 428 offered in fullsize Fords and T-birds made 345 hp, 10 more than the CJ despite its milder cam, low-rise iron intake, 446-cfm Ford 4300 series four-barrel carburetor, and clunky log-style exhaust manifolds. However, there have been multiple anniversary Ford Cobra Jets that have made sub-8 second quarter mile passes, showing there is serious room for modding. Difference between a 390fe and 428fe? - Club Cobra The Mustang still used small blocks in their engines, with the 289 cid being the largest available. Needless to say, the success of the Cobra Jet package guaranteed its reappearance for the '69 model year. The package included special capscrew-type connecting rods borrowed from the Ford GT Mark IV 427 Le Mans engine. Both were used on 428 PI, passenger car and Cobra Jet applications. Just as long as they dont add gimmicky speakers with faux-engine noise, like some of their competitors. Register now for free! The largest was the 390 cid, which Ford first brought out in 1961. This was not enough to beat the big-block Camaro, however, which ran the quarter a full second quicker. The 428CJ was available in nine Ford, Mercury, and Shelby muscle car models between 1968-1970. Hi Keiththis Ford Article isn't the best scan I've ever done but the article is very, Location: Abe Lincolns Birthplace, Come join the discussion about restoration, performance, modifications, classifieds, troubleshooting, maintenance, and more! 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). The 428 Cyclone tipped the scales at 3,740 pounds, which helped give it momentum in the oval track, but held it back in the quarter-mile. The Boss and Cobra Jets had the same block with four bolt mains, short skirts, and thin wall castings. Be sure to check the bore 4.13 and measure the distance between the cylinder cores. You can have it straight (CJ 428) or with optional CJ 428 Ram, the breathtaker. For the '70 Torino and Cyclone and the '71 Mustang and Cougar, the passing of the 428 meant a switchover to the new 385-series Ford big-block. (REGISTERED USERS DO NOT SEE THIS POST/AD! However, buyers would have to order the GT package if they wanted to get their hands on one in 1968available in either a coupe or fastback body style. Carburetors Of The 428 - Dearborn Pit Stop Blog Besides the T-Bird, there were Galaxies, Thunderbolt Fairlanes, Mustangs, Torinos, and both the AC Cobra and GT 500 Shelbys. 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! Welcome to Club Cobra! Educate me! This explains why Ford went with the 390 in the Mustang instead of the 427. However, Ford ran into a problem. But there was one thing about the 428 CJ that left everyone puzzled. 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. A true Cobra Jet block will have a C cast in the back the block where the bell housing bolts up. By far and away the most common -- they made 100,000+ of these. In the November 1969 issue of Super Stock and Drag Illustrated magazine, a 70 Mach 1 made a 14.11-second quarter-mile pass, traveling 101.1 miles per hour. All Rights Reserved. Super Cobra Jet oil cooler adapter The Electric Ford Cobra Jet Mustang can blast through the quarter-mile in just 8.12 seconds at 172 mph, annihilating any Mustang that has ever been in production. Ford execs got the word. Untamed European elegance indeed. Credit: CarsRememberWhenAutoSales/Wikipedia. "A standard 428 will have a U1 crankshaft ballanced on the inside of the ballancer but weight added on crankshaft . The Cobra Jet 428 motors in Mustangs used heads from the 427, plus other enhancements to really put some hair on their chest. The 390 big-block version of the Mustang ran fairly well--well enough to post mid-15-second times in the quarter-mile. The 428 was basically a bored out 427, though it performed better and was more reliable. Although the '67 Mustang looked a lot like the original, it was, in fact, a completely new car with no interchangeable sheetmetal. Super Cobra Jet harmonic balancer counter weight, 2 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. Please notethe 428 and 429 are completely different classes or families of engines. Though almost identical in displacement, Ford based the new 429 Cobra and Super Cobra Jets on the 385 series. Enthusiasts immediately latched onto the 428 and 429 Cobra and Super Cobra Jets, pushing them to their limits at local drag strips on the main drag. Block, heads, manifolds, etc. Even less common with a production of maybe 3,000. After some break-in miles, we'd likely see 375 hp and, with headers, yes, very likely 400 ponies. Ford released the original 428 in 1966, and in 1968 the Cobra Jet variant was born. Note that there is no mention of the Detroit Locker in the 1969 description, but it's clearly listed in the 1970 description. p.s. 428 CJ's came in the 69 so it would be more correct as far as appearance goes. By 1974 the emissions crap that was added to the engine killed the power. Some SCJ block had the word "super" stamped on the rear. The peak torque of 452.4-lb-ft at 3,700 rpm is also higher than Dearborn's claim of 445 lb-ft at 3,400. If so, please consider sharing a picture. Reportedly, they didnt even let Tasca leave with the car. 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. 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 rarest of the bunch are the 68's. The most vaulable Cobra Jet is the 1968 Shelby GT500KR convertibles, which can go for as much or more than a BOSS 429. Nineteen-seventy was the last year for the venerable FE-series big-block engine in the Mustang and Cougar. Craft notes that one significant change for 1970 was the inclusion of a rear sway bar for Cobra Jet Mustangs. Kevin later explicitly confirmed that "Ford did not produce 69 4.30 vehicles with Detroit Lockers. The connecting rod journal diameter measures between 2.4380 and 2.4388 inches. stronger. Instead, "Tasca Ford"the second-largest Ford dealership in the world in the 1960sinspired the 428CJ revolution. This summary comparison of major 428 engine components was prepared by Bill Barr, Principal Engineer for the 428 Cobra Jet engine development program at Ford Motor Company. 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. Starting in 1966, you could also get a 428 Police Interceptor (only sold to police entities). These cars ran the quarter-mile in the mid-11-second range, quick by any standard. 390 Vs 428 block | Vintage Mustang Forums 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. In 1968, Ford released the first versions of their now famed V8 Cobra Jet engines. Now lets take a look at the various Ford Cobra Jet engines. The 428's and 429's most associated with Cougars are Cobra Jets. At the same time, a Ford dealer named Bob Tasca was also looking to get more power out of his 390-powered Mustangs. Very few were ordered because of the popularity of the new Mach 1 package. The rotating assemblies between the Cobra Jet and Super Cobra Jets are different, and mixing them leads to balance issues. Ky, Cobra Make, Engine: CSX4761, KCR Shelby Alloy 496,760hp, My 427 racer buddy gave me a nos set of c6ae lemans rods,he strongly cautioned me to replace all the bolts with arp ,even though they have never been torqued,he told me in the 70's they went thru a rash of windowing new motors and was told by holman moody that of the ford rod bolts at least 25 percent were fualty out of the box,that would ruin your day to say the least,,huh ? But it was the Camaro-Firebird that joined the Mustang in the ponycar class. Thought they would both go same time. 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. Super Cobra Jets also had oil coolers as standard, which were options for the Cobra Jets. When identifying a Super Cobra Jet, you cant do it by the VIN as it shares the same R and Q code designations as the Cobra Jet. There were three original Cobra Jets, the 351, 428, and 429. That is, the performance motors were either a CJ or a SCJ. 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. The A blocks were the earlier type. Bought a new 69 Mach 1 and ran at the strip w best et 12.72. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Ford Cobra Jets came in either 351, 428, or 429 cid displacements, and there were also Super Cobra Jets, too. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. The original production run only lasted for six years, from 1968-1974, but it made an incredibly outsized impact. The 428, on the other hand, has a smaller bore and longer stroke producing more torque and is well-suited to street-strip action. It appears that Ford went through at least three piston designs during the 428 CJ and SCJ production run to address durability problems. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. Super Cobra Jet harmonic balancer counter weight, 1 Oddly, however, Ford never revised the sandbagged horsepower claims. 3) An oil cooler If it's to be a "driver", compression needs to be lowered to use "pump . 370 HP (likely underrated), thick strong blocks and massive ports int he heads. 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. The Thunderbolt proved to be a very fast factory team drag racer--and proved again that the FE engine could be a formidable competitor. They did so to honor the 1968 Mustangs that won the NHRA Winternationals, and inaugurated the first Cobra Jet era. I want to register an account for free right now! The Super Cobra Jet, available only with a 3.91 or 4.30 rear axle ratio, included additional features. They also made a healthy 450 lb-ft of torque, which made for total increases of 35-40 horsepower and 10 lb-ft over the 428s.

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