difference between 428 and 428 cobra jet

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. 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. Typical Cobra Jet Crankshaft Several different cranks were used in 428 CJ and SCJ engines during the course of production. . The Mercury division of Ford put the 428 Cobra Jet in their Comets and Cyclones, and Shelby used one for his new GT500KR (King of the Road). While the print ad boasted leading the way, the Cyclone CJ ended up closer to the middle of the pack in 1969, coming in 12th overall in factory supercar quarter-mile times published that year. Two were offered for 428 Super Cobra Jet before and after that date. The W-code 427 and 428 CJ shared just about everything except main bearing caps and bore/stroke dimensions. YES! The cast iron intake manifold was a high-rise style, which was exceedling heavy at 90 lbs. one basic block for both the 429 and 460 with a 4.360-inch bore. But, for many, it was far too inconspicuous for them to realize it before seeing its taillights. The 428 CJ cylinder heads featured an un-machined chamber of 73-76cc, 2.06" intake valves and 1.66" exhaust valves. When I had Southern Automotive rebuild my engine, I delivered it to him with a set of LeMans rods. : For registered members this ad will NOT show, Cobra Make, Engine: Unique Motorcars (sold). This victory was not lost on anyone--the public, the press, and Ford alike--much less the competition. Ordering either of these axle ratio options commonly triggered a few other upgrades as well, including the 428 Super Cobra Jet engine, an external oil cooler mounted in front of the radiator, and relocation of the driver's side horn to the passenger side of the radiator core support to make room for the oil cooler. It came in special Mustangs (and 2 Cougars) in 1969-70. To verify an original car, you can simply look at the vehicle identification number (VIN) on the dashboard. Shelby realized that this was a real alternative to the expensive and temperamental 427. 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. 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 longer stroke (3.98 vs. 3.78 for the 427) gave the engine powerful low-end punch. As referenced earlier, the 390 was a 4.050 bore and a 3.781 crank. However, the Ford production database describes the car as having an S-code 3.50:1 traction-lok rear. Initially, Ford limited production to only 50, but later increased that by 250 due to popular demand. The 429 is a 70 complete out of a Lincoln or some other 4 door. 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. Needless to say, the success of the Cobra Jet package guaranteed its reappearance for the '69 model year. I want to register an account for free right now! 428 Cobra Jet vs. 428 Super Cobra Jet Factory horsepower and torque ratings were the same for both CJ and SCJ engines. 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. Kevin later explicitly confirmed that "Ford did not produce 69 4.30 vehicles with Detroit Lockers. These are a few ways you can tell. 390 and 428 are different. Yikes, that's huge! The Cobra Jet version of the 351 Cleveland was one of four 351 Clevelands Ford released that year. 427 cobra jet vs a 69 boss 429 | Ford Mustang Forum Also, the stroke on a 428 should be 3.98. Welcome to Club Cobra! Two-bolt main block Between 345-360 horsepower 428 Super Cobra Jet Internal structure differences included Lemans type cap screw rods 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. 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. A whole host of high-performance parts was available for the 396 from the Corvette larder, which further complicated matters in Dearborn. All of the new Ford Cobra Jets are supercharged, except the Cobra Jet TT from 2013 that has twin-turbos. The 1969 Ford Fairlane Cobra was a 1969-only option and was available in either a Formal Roof Hardtop or a Fastback form. Pictures of some of these parts can be found in the component identification section of this web site. The 428 Cobra and Super Cobra Jets continued for 1970, but there was also a new 429 Cobra Jet now. 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. Lets check out the eight fastest Ford Muscle Cars powered by a 428CJ and 428SCJ, shall we? A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. There was a special designation in the database to tell which cars had these installed". A date code correct 69 428 block could be worth a decent buck. Note that the explanation says that three other cars were built like this at San Jose! 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 . 428 CJ's came in the 69 so it would be more correct as far as appearance goes. Visual differances between 428CJ and regular 428? Typically 360 horsepower. Some SCJ block had the word "super" stamped on the rear. 428 cobra jet vs. 460. i was wondering if a 428 cj or a 460 would be a better engine for a street rod. The 428 Cobra Jet powered some of the fastest Ford Muscle Cars from 1968 to 1970, over nine Ford and Mercury models. So instead, you have to examine the axle code on the door tag for a V or a W to verify its legit. 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. 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. Basically, a 428 is just a stroked 390, and tuned for massive torque over horsepower. The value of a Cobra Jet will differ, depending on the body style, options, and year of the car. ID by casting number on the block of C9AE. The stage was set, and war was waged in earnest. 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. Lets look at the differences between a 428 Cobra Jet and the 428 Super Cobra Jet engine, shall we? Cast iron intake manifold identical to the aluminum one on the police interceptor. In its August 1968 issue, Motor Trend Magazine reported a 13.86-second ET, traveling at 101.69 miles per hour. Cast iron exhaust manifolds. Super Cobra Jet harmonic balancer counter weight, 1 For this family of motors, the SCJ actually got four-bolt mains and then there was that same 5 horsepower difference. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 1969 Ford Mustang Mach 1 428 Super Cobra Jet Muscle Car Of - YouTube The 406 was essentially a bored 390, and in 1963 Ford went even bigger and bored the 406 out to 427 cid. 428 Vs 429 - Mercury Cougar Owners The 1968 Mustang received several styling updates, including side scoops, steering wheel, side marker lights, and gas cap. FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - difference in 428 blocks? Most of the differences have been listed except for one major difference. Ford created a few high performance variants of the 429, the Boss 429 and the 429 Cobra/Super Cobra Jets. 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! Besides the T-Bird, there were Galaxies, Thunderbolt Fairlanes, Mustangs, Torinos, and both the AC Cobra and GT 500 Shelbys. 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. Actually, about 400 hp were on tap in this incarnation of the 428. 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. 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. Either way, you can be guaranteed it will be a monster at the drag strip and not be lacking for power. More than 18,000 were installed in 1968-1970 Mustangs alone. 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 largest was the 390 cid, which Ford first brought out in 1961. 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. This is an internally ballance assy . . 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! All Rights Reserved. - i dont know much about 428's but im looking into buying a boat that has a 428 in it. 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. 428 Cobra Jet Engine Detailing, Part 2 - MotorTrend Slightly smaller in bore but longer in stroke, the 428 ran smoothly in street trim, but it was still a very powerful engine, with mountains of torque. The block and head are both cast iron, and the bore and stroke were 4.13 X 3.98. The World's largest The difference was forged pistons, solid lifter cam and four bolt mains. 1973-1974 351 Cobra Jets had smaller valves, which resulted in a drop in horsepower on some models to 245. Both were used on 428 PI, passenger car and Cobra Jet applications. Right to the end in 1970, the 335hp rating stuck. Most 428s in 7 liter [COLOR=#0000ff! Super Cobra Jet horn reinforcement bracket Lots of people have different opinions about the "Drag Pack" option described above, what it included, and which cars it was available for. Chevrolet wasn't Ford's only problem in the performance department. Introduced at the height of the high-performance wars, big-block Cobra Jets acquitted themselves well in the Mustang and in other cars. 429 Cobra Jet and Super Cobra Jet Vehicle Applications. He had been involved in the Thunderbolt program back in 1964. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. For the 429 Ford Cobra Jet carbs, there were either 715 cfm or 780 cfm 4 bbl options. The Ford engineers kept the KR-8 so they could break it down and discover what made it so powerful. Most estimates put the 1968 Ford Cobra Jet 428s at north of 400 horsepower. The Mustang had grown bigger than ever, with a weight of nearly two tons. Before being replaced by the April 1, 1968, arrival of the 428 CJ, the mighty NASCAR-inspired 427 gave one last gasp in detuned form. 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". The factory power rating seemed to be a typo. 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. Block, heads, manifolds, etc. Very rare and very expensive as only about 1,200 were made. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. Component Identification | Mustang 428 Cobra Jet Registry The 428 Cobra Jet returned, and all Mach 1s came standard with a rear sway bar, and the Shaker Hood was now available on all V-8s, not just the CJs. The Thunderbolt proved to be a very fast factory team drag racer--and proved again that the FE engine could be a formidable competitor. Is a 428 a cobra jet or is the cj a special 428 and is the block different between the cj and non cj. 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. 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 '69-'70 Mustangs were nearly identical cars featuring minor cosmetic changes. Say Cyclone CJ. p.s. Just two years into production, Ford introduced the 429 Cobra Jet and Super Cobra Jet for compact and intermediate sized rides like Mustang, Torino, Cyclone, and Cougar. YES! . Super Cobra Jets also had oil coolers as standard, which were options for the Cobra Jets. I bought a 72' Thunderbird yrs ago it was still pretty powerful. The name is perhaps one of Ford's most enduring performance legacies. 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. 1969 Ford Cobras were dressed-down street warriors with a basic interior, column shifter, essential gauges, and gobs of power far more significant than 335 horsepower advertised ratings. Ford wanted to develop a new high-performance engine to help compete against other newly introduced pony cars that had stolen market share. If you don't put the 428 in it you should get a 460 instead of the 429 for even more power. I'm not embarrased to ask anything anymore. The Q-code Cobra Jet 428 was rated at a very conservative 335hp @ 5600rpm. I spoke to Rob Celedon the other day and his SCJ car has the same stamp on the block. But of course, it was too late to change the name. 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 ? * These are service part numbers, not engineering numbers. Included in any Cobra Jet package was a choice of the durable Top Loader four-speed transmission or a heavy-duty C6 three-speed Cruise-O-Matic, and of course the famously sturdy 9-inch rearend. The differences for the SCJ were: 1) The beefer 427 "LeMans" connecting rods. The 428's and 429's most associated with Cougars are Cobra Jets.

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