difference between 428 and 428 cobra jet difference between 428 and 428 cobra jet

Super Cobra Jet harmonic balancer counter weight, 3 The package was also available in the Torino, the Fairlane, and the Mercury Cyclone. They were still rated the same 335 horsepower as the Cobra Jets, which was probably still underestimated by 100 horsepower. You cannot really compare 69 with the 74 cars. Super Cobra Jet harmonic balancer counter weight, 1 According to the excellent Boss and Cobra Jet Mustangs by Dr. John Craft, this is how the Cobra Jet was born. 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. Very rare and very expensive as only about 1,200 were made. Sunroof has a big brain. non biased Shelby Cobra related site! The heads and intake were unique to the 428CJ. : For registered members this ad will NOT show. Cobra Jet Crankshaft (engineering number detail) The real cobra jet block had reinforced webbing as well as a higher nickel content, i.e. 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 1969 description says that the Drag Pack option is "Available only with 428 CID 4V Non-Ram or Ram Air engines" and "Not available with other optional ratio axles or air conditioner". The 1969 Ford Fairlane Cobra was a 1969-only option and was available in either a Formal Roof Hardtop or a Fastback form. all aluminum FE, Check the intake casting number, the head casting number and if the heads are of the bore and stroke. The back of the CJ block should have a "C" cast or welded into the back of it. 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. If the 69 428 is the real deal buy it. They did have a few XR7-G Cougars built that came with the first factory retractable sunroof though! Just as long as they dont add gimmicky speakers with faux-engine noise, like some of their competitors. 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. Welcome to Club Cobra! 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. Yep, I'm a hack! I want to register an account for free right now! 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. 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 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 . A true Cobra Jet block will have a C cast in the back the block where the bell housing bolts up. Ford Cobra Jets came in either 351, 428, or 429 cid displacements, and there were also Super Cobra Jets, too. Block, heads, manifolds, etc. 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. There were slight differences in the base and higher trim Ford Cobra Jets, yet they were all rated the same 335 horsepower, likely meaning Ford was really sandbagging the numbers the whole time. 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. Yet, in 2008, Ford brought back the Cobra Jet badging for its 40th Anniversary. All FE dampers are neutrally balanced, so all can be interchanged between motors if you understand the pulley requirements. The name is perhaps one of Ford's most enduring performance legacies. However, the Ford production database describes the car as having an S-code 3.50:1 traction-lok rear. The 429ci Cobra Jet was a different entity entirely. The error is described on the owner's Marti report; here's an excerpt. According to statistics courtesy of Marti Auto Works and copyrighted, this car was built at the San Jose assembly plant on October 1, 1968. 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. 428 CJ's came in the 69 so it would be more correct as far as appearance goes. Nineteen-seventy was the last year for the venerable FE-series big-block engine in the Mustang and Cougar. Also, there is an S between the 8 & the C Cobra Make, Engine: I Wish, Just an old truck with an FE, Cobra Make, Engine: Kirkham 427 (KMP 266); CAV GT40, also forged pistons,and an electronically balanced crank shaft on the SCJ;all reliability issues not HP ones. 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. The increasing shift towards electric power plants makes it likely that any future Cobra Jets will be electric. Ford countered by introducing the FE-series 390ci V-8 engine for the '67 Mustang. The cars ran very well and won in the Super Stock category that year. The program was engineered, designed, tested, validated, released, and certified between January 1967 and August 1968. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. There were three original Cobra Jets, the 351, 428, and 429. The rest of the info is the same. I've heard this could be a Cobra Jet but I've also heard this might not be the case. valves), and the valves were closer together than on other FE heads so that the CJ . However, the original Mustang platform, as popular as it was, could not accept the larger engines Ford already had in its product lineup, because the engine compartment was simply too small. In addition, the Spoiler II was available in either a red or blue paint schemehonoring legendary NASCAR drivers Cale Yarborough and Dan Gurney, respectively. 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 The 428 was basically a bored out 427, though it performed better and was more reliable. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. This became a private war between the automakers. 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. The value is markedly different (about double). The 429 heads were incredibly free flowing, and in reality some of the best Ford big block heads ever created. In fourth place is the 1968 Mercury 428 Cyclone GT. After that nothing but C blocks were made. 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. document.getElementById( "ak_js_3" ).setAttribute( "value", ( new Date() ).getTime() ); Get Your Top 50 Fastest Muscle Cars ChartFREE! Super Cobra Jet horn jumper wire. All of the new Ford Cobra Jets are supercharged, except the Cobra Jet TT from 2013 that has twin-turbos. If so, please consider sharing a picture. The new 2008 Ford Cobra Jet Mustangs were built strictly for the drag strip, so they werent even given VINs. 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. The 428 SCJ was first introduced during the 1969 model year. 2) Cast iron PI (Police Interceptor) intake manifold. The 428 Cobra Jet powered some of the fastest Ford Muscle Cars from 1968 to 1970, over nine Ford and Mercury models. The 351 Cobra Jet is also known as the Q-Code 351, due to its RPO. Ford was not caught in flagrante delecto, however. Four decades after its initial release, and 34 years after it was discontinued, Ford brought back the Cobra Jet badge in 2008. When the Camaro hit the streets with a 396ci engine borrowed from the Chevelle parts bin, Ford knew it had competition. It appears that Ford went through at least three piston designs during the 428 CJ and SCJ production run to address durability problems. Ford rated the engine at 335 horsepower and 440 lb-ft of torque, but that was probably understated for insurance purposes. When this 428ci engine was installed in the Mustang, Shelby called the car the GT500. The big reason a 428CJ makes more horsepower and torque than a PI is the superior heads. Typically 360 horsepower. By 1974 the emissions crap that was added to the engine killed the power. 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 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. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. Success at the track meant success at the dealership, and Ford knew this. Some SCJ block had the word "super" stamped on the rear. It also saw the addition of a new convertible body style with a power top. The longer stroke (3.98 vs. 3.78 for the 427) gave the engine powerful low-end punch. If you don't put the 428 in it you should get a 460 instead of the 429 for even more power. Cobra Jet Mustang production continued into 1970. It was rated at 375HP (grossly underrated). Very few were ordered because of the popularity of the new Mach 1 package. For this family of motors, the SCJ actually got four-bolt mains and then there was that same 5 horsepower difference. 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. However, in true Cobra Jet fashion, Ford underestimated the horsepower from the factory. I bought a 72' Thunderbird yrs ago it was still pretty powerful. Both the Cobra and Super Cobra Jets had dished cast pistons, and used stronger connecting rods than the standard 428. Lets look at the differences between a 428 Cobra Jet and the 428 Super Cobra Jet engine, shall we? So the question remains, how much horsepower does a stock 428 CJ really deliver? Both were used on 428 PI, passenger car and Cobra Jet applications. 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. The back of the CJ block should have a "C" cast or welded into the back of it. The Fora platform includes forum software by XenForo. . 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. 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. 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. 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. It didnt come close to comparing with the 351 Boss, and was below even the standard 351 in performance. The CJ had the good heads, cam but had the iron intake. In the 1969 Supercar Annual magazine, one ran a 13.94-second quarter-mile time, traveling 101.7 miles per hour. The chambers were open head, which helped with emissions, and Ford fitted the Autolite/Ford 4300-D 750 cfm 4bbl carburetor to it. 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. In the quarter-mile, a one-second difference is a lot of car lengths. I'm not going to provide an opinion, but I will show you how Ford Motor Company described this Mustang option on their 1969 and 1970 option price lists. Factory horsepower and torque ratings were the same for both CJ and SCJ engines. Information provided by Phil Wassil and by Kevin Marti of Marti Auto Works documents Detroit Locker availability beginning around November 1969 - in the 1970 model year! In second place is the 1968 Ford Mustang 428 Cobra Jet. 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. Every 1969 Mustang Mach 1 (72,458) came in the SportsRoof fastback body style, equipped with a V-8 engine ranging from a 351W 2V to the 428 CID Cobra Jet 4V with or without Ram Air. Required fields are marked *. 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. Besides the T-Bird, there were Galaxies, Thunderbolt Fairlanes, Mustangs, Torinos, and both the AC Cobra and GT 500 Shelbys. The 351 Ford Cobra jet also had four-bolt mains, hydraulic valve lifters, high lift/duration cams, and larger valves than the standard 351. Two-bolt main block Between 345-360 horsepower 428 Super Cobra Jet Internal structure differences included Lemans type cap screw rods