what's a 428 cobra jet engine worth | Hot Rod Forum 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. Keith, Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31, also police interceptors had solid lifters and adjustable rockers---GT & CJ were hydraulic, Cobra Make, Engine: CSX #4xxx with CSX 482; David Kee Toploader, Reading this brings up a question that I've always wondered about. In fifth place is the 1969 Mercury Cyclone CJ. Cobra Make, Engine: Previous ERA owner on break, Just a note on the LeMans rods. Two-bolt main block Between 345-360 horsepower 428 Super Cobra Jet Internal structure differences included Lemans type cap screw rods The capscrews were shorter than the 427's to clear the block Externally balanced External engine oil cooler Here is some 429 info I gleaned off the net: First was the base 429, known as the Thunder Jet (TJ). now if your talking 429scj vs. 428 scj i would give the nod to the 429scj. Factory horsepower and torque ratings were the same for both CJ and SCJ engines. 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. Cast iron intake manifold identical to the aluminum one on the police interceptor. 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. Block, heads, manifolds, etc. 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. The Cobra Jet package added $287.60 to the sticker price of a Cyclone. The 428 Cobra and Super Cobra Jets continued for 1970, but there was also a new 429 Cobra Jet now. Super Cobra Jet harmonic balancer counter weight, 1 Carroll Shelby, Bob Tasca, and the Hybrid 427/428 Engines, Best Ford Fox Body Mustang Performance Upgrades. Welcome to Club Cobra! A lot of people try to pawn off a 390 as a 428. the blocks are nearly identical and the stroke is close. Cast iron intake manifold identical to the aluminum one on the police interceptor. The Cobra Jets are very similar to the standard 428s, with only minimal upgrades for better performance and reliability. 428 junk or Cobra Jet? How to tell. | Vintage Mustang Forums Known as the Thunderbolt, this Fairlane saw very limited production and was built as a factory lightweight race car. His cars had been very successful, and word on the street was Tasca's cars were working very well. A date code correct 69 428 block could be worth a decent buck. Identified by the letter W in the fifth spot of the VIN, this early 1968 edition was the only 427 with hydraulic lifters, an iron intake manifold, a single point distributor, a smog pump (Ford's Thermactor system), an automatic transmission (the four-speed was not available with the 427), and optional air conditioning. The C blocks were later. 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. Yet, in 2008, Ford brought back the Cobra Jet badging for its 40th Anniversary. The Fora platform includes forum software by XenForo. If you don't put the 428 in it you should get a 460 instead of the 429 for even more power. Both were used on 428 PI, passenger car and Cobra Jet applications. The 428's and 429's most associated with Cougars are Cobra Jets. Ford was not caught in flagrante delecto, however. The Ford Cobra Jets are some of the most iconic engines in Ford history, and have been since their release back in 1968. Besides the T-Bird, there were Galaxies, Thunderbolt Fairlanes, Mustangs, Torinos, and both the AC Cobra and GT 500 Shelbys. The PI ran stock 390/428 heads, an aluminum intake, the same cam as the CJ and a 600 CFM carb. However, the Ford production database describes the car as having an S-code 3.50:1 traction-lok rear. If so, please consider sharing a picture. The Q-code Cobra Jet 428 was rated at a very conservative 335hp @ 5600rpm. While both shared the same advertised horsepower and torque figures, the 428SCJ wasnt available with air conditioning due to the engines oil cooler location. 1999 - 2022 Scott A. Hollenbeck. 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. He had been involved in the Thunderbolt program back in 1964. Yet, while they were considered big blocks, the first generation of the Ford FE never had displacements of larger than 400 cid. 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. 428 cobra jet vs. 460 - Club Cobra JavaScript is disabled. Regarding the 428, it also matters if the block is a true CJ block or a police interceptor block. According to the excellent Boss and Cobra Jet Mustangs by Dr. John Craft, this is how the Cobra Jet was born. 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. Cobra Jet Crankshaft (engineering number detail) In '69 the 351 was good for either 250 or 290 horsepower, depending on its carburetor configuration, while the four-barrel 390 dropped somewhat to 320. The most iconic are probably the Ford Cobra Jet Mustangs, which won numerous drag racing championships. 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. Difference between a 390fe and 428fe? - Club Cobra 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. Bore and stroke was 4.0 X 3.5. It was built only in 1970-71. Twenty three years later 1992 bought a 289 GT Coup but soon installed a FE with cylender head mods and solid roller cam have ran a best 1.33 60 foot and a 6.39 eighth mile. 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. The chambers were open head, which helped with emissions, and Ford fitted the Autolite/Ford 4300-D 750 cfm 4bbl carburetor to it. The Mustang had grown bigger than ever, with a weight of nearly two tons. Both the Cobra and Super Cobra Jets had dished cast pistons, and used stronger connecting rods than the standard 428. Pictures of some of these parts can be found in the component identification section of this web site. Note that the reinforcement bracket used with the Super Cobra Jet horn arrangement appears to have been used only during the 1969 model year. The SCJ had beefier rods and an oil cooler. Cast iron exhaust manifolds. You should feel lucky to have driven your 69 Bird. stronger. 1973-1974 351 Cobra Jets had smaller valves, which resulted in a drop in horsepower on some models to 245. The 428 Cobra Jet powered some of the fastest Ford Muscle Cars from 1968 to 1970, over nine Ford and Mercury models. 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. Some SCJ block had the word "super" stamped on the rear. The 1970 description says "Available only with 428 CID 4V Cobra or Cobra Jet engine" and "Not available on Boss 302, or with other optional ratio axles". In 1969, 10 different Mustang engine options were available. From 2008-2012, Ford used a supercharged version of their 5.4 L Modular V8. 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. 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. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. All this was none too soon. 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. Ford released the original 428 in 1966, and in 1968 the Cobra Jet variant was born. 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). 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. When the Camaro hit the streets with a 396ci engine borrowed from the Chevelle parts bin, Ford knew it had competition. But there are other types of 428's and 429's floating around out there, built for different purposes, i.e. 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. 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. 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. 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 SCJ block is the same as a CJ. Even an external oil cooler was part of the deal--not bad for $6.53. It didnt come close to comparing with the 351 Boss, and was below even the standard 351 in performance. In 1964, the 427 was shoehorned into the Fairlane, Ford's midsized entry, between the Galaxie on the big end and the Falcon on the small. While the 1970 Ford Mustang Mach 1 came in eighth place on this list, it came in 21st place in the fastest muscle cars of 1970 rankings. - i dont know much about 428's but im looking into buying a boat that has a 428 in it. But, from the factory it was never as powerful as the (solid lifter) 427. 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 heads ID themselves. There is only one high-performance damper of the latter era: The SCJ damper, which has a heavy inertia ring, much like the LeMans. The 428 Cobra and Super Cobra Jets continued for 1970, but there was also a new 429 Cobra Jet now. There was a special designation in the database to tell which cars had these installed". The 390 Mustang was getting abused at the drag strip by Chevrolets new 396 powered Camaro. Increased Ebay value in a few strokes of a hammer! The big-block Chevy had the edge in breathing ability, but this move closed the gap between the two engines a great deal. The differences for the SCJ were: 1) The beefer 427 "LeMans" connecting rods. Cast iron exhaust manifolds. 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. As a result, the 428 was less rev-happy but it gained a low-end torque punch that was absent in the 427. difference in 428 blocks? - Ford Truck Enthusiasts Forums After that nothing but C blocks were made. You cannot really compare 69 with the 74 cars. Basically, a 428 is just a stroked 390, and tuned for massive torque over horsepower. The difference in displacement between the two was achieved via stroke, with the 429 checking in at 3.590 . A true Cobra Jet block will have a C cast in the back the block where the bell housing bolts up. In the go department, a real grabber (335 horses). The 1967 Shelby GT500 featured a new 428 cid engine that had been used in the Thunderbirds and Galaxies. the 428 CJ. Many aficionados of the Cobra Jet Mustang consider the '70 version to be the nicest of all, combining the last year of the FE engine with the last year for the '69-'70 body style. But, for many, it was far too inconspicuous for them to realize it before seeing its taillights. 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. 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. Even less common with a production of maybe 3,000. 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 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. : For registered members this ad will NOT show, Cobra Make, Engine: Unique Motorcars (sold). Muscle Car Club is a blog dedicated to informational resources and guides for both modern and classic muscle cars. 1968 428 Cobra Jet Drag Strip Modifications, 428 CJ Mustangs at the 1968 NHRA Winternationals, Comparison of Major 428 Engine Components, Classic Mustang Warranty Plate/Certification Label Decoder, Cobra Jet Crankshaft (engineering number detail), Super Cobra Jet harmonic balancer counter weight, 1, Super Cobra Jet harmonic balancer counter weight, 2, Super Cobra Jet harmonic balancer counter weight, 3, Super Cobra Jet harmonic balancer counter weight, 4, Super Cobra Jet horn detail (note the jumper wire and reinforcement bracket), Super Cobra Jet horn reinforcement bracket. This marked the end of the original run of Ford Cobra Jet engines and vehicles. 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. The value of a Cobra Jet will differ, depending on the body style, options, and year of the car. Oddly, however, Ford never revised the sandbagged horsepower claims. For this family of motors, the SCJ actually got four-bolt mains and then there was that same 5 horsepower difference. 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. When the buyer selected the CJ option, the GT option became mandatory. 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. document.getElementById( "ak_js_3" ).setAttribute( "value", ( new Date() ).getTime() ); Get Your Top 50 Fastest Muscle Cars ChartFREE! Now. Ford released new versions of the Cobra Jet Mustang in 2010, 2012, 2013, 2014, 2016, and 2018, making 50 annually. It was probably a case of "building out" soon-to-be obsolete 427 inventory. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. The main bearing journal diameter measures between 2.7484 and 2.7492 inches. As we all understand, the 390 wasn't standing up to the 396, and sales reflected this. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Great article, but the 68 Cougar wasnt offered as a convertible! I've seen written reference to a C9AE-C rod also being used, but I've never been able to confirm an installation. To verify an original car, you can simply look at the vehicle identification number (VIN) on the dashboard. The 715 was a Ford replica of a Rochester carb, and was fitted to the base Cobra Jets. Royce: thanx for the clarification. See if you can determine if these motors you are looking at are CJ's. Ford Cobra Jet 429-428-427 - CarMemories.com Chevrolet wasn't Ford's only problem in the performance department. What to look for when buying the brutish Ford Torino GT I won Winter Nationals at Beeline Dragway in DStock Class at 13:05 118 mph in 1970 with my 428 CJ Mach. The Super Cobra Jet, available only with a 3.91 or 4.30 rear axle ratio, included additional features. In the 60s-70s, Ford put the Cobra Jet and Super Cobra Jet engines in Mustangs, Thunderbirds, and of course, Cobras. The 428 had a bore of 4.13" and a stroke of 3.98" and was produced from 1966 to 1970. The 429s are also known as the 7.0 Lima V8s, due to their metric displacement. chuck, The same naming convention was applied to the 429 engine as well. Its not very well known, but Ford also branded another Cobra Jet from 1971-1974 the 351 Cleveland. i am putting the motor in a FORD 1972 short bed single cab pickup. 428CJ /SCJ cars used shock tower reinforcements, thicker front sway bars, and beefier springs and shocks. 427 cobra jet vs a 69 boss 429 | Ford Mustang Forum Also, the stroke on a 428 should be 3.98. Ford created a few high performance variants of the 429, the Boss 429 and the 429 Cobra/Super Cobra Jets. Of course there's the Boss 429, but thats a horse of completely different color. The rotating assemblies between the Cobra Jet and Super Cobra Jets are different, and mixing them leads to balance issues. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. The back of the CJ block should have a "C" cast or welded into the back of it. Nineteen-seventy was the last year for the venerable FE-series big-block engine in the Mustang and Cougar. The front maintained a full-width grille with an updated horizontally slatted grille, and, in the rear, the Cougar now came equipped with taillight lenses that were concave instead of convex. Because of the long throw, the 428 was more of a low rpm / torque motor were as the 427 was a high rpm race motor. ), http://www.gessford.com/images/428-03.gif, http://www.gessford.com/images/428cobrajet.htm, http://www.gessford.com/images/FordMuscleStory.htm, http://www.428cobrajet.com/cj-vs-scj.html. 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! Super Cobra Jet harmonic balancer Register now for free! A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. Of course there's the Boss 429, but thats a horse of completely different color. In April 1968, Ford introduced the Cobra Jet, built from a 428 Police Interceptor short block with 427 low riser heads, among other heavier-duty performance partssimilar to what Holman Moody had invented. The 351 Ford Cobra jet also had four-bolt mains, hydraulic valve lifters, high lift/duration cams, and larger valves than the standard 351. The original production run only lasted for six years, from 1968-1974, but it made an incredibly outsized impact. They were the be-all and end-all of rods back in the sixties, but metallurgy has far surpassed them today. It came in T-birds and full size Fords in the late 60's and early 70's. Completely overhauled in 1968, the Mercury Cyclone underwent significant changes, including dropping the convertible and adding a fastback form. All of this was a step in the right direction, but the '67 GT500 was still slower than the rip-snortin' 375hp 396 Camaro. See if you can determine if these motors you are looking at are CJ's. 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. 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 Cyclone was now part of the Montego family of vehicles. The 1968 Mustang received several styling updates, including side scoops, steering wheel, side marker lights, and gas cap. 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. 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. A police interceptor may have an "A". 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. Is a 428 a cobra jet or is the cj a special 428 and is the block different between the cj and non cj. 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. Note that there is no mention of the Detroit Locker in the 1969 description, but it's clearly listed in the 1970 description. 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. Whenever a . As an Amazon Associate I earn from qualifying purchases. Two codes designated a CJ: the R code specified a Ram Air vehicle, while the Q code meant no Ram Air. 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. The car automatically became a Super Cobra Jet. non biased Shelby Cobra related site! 390 and 428 are different. 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. Welcome to Club Cobra! It also saw the addition of a new convertible body style with a power top. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. A remedy was in the making, as the 428 Cobra Jet package for the Mustang began its metamorphosis. 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 problem with the 427 was that it was far too expensive to produce for use in a regular production car. Then there was the 429 Cobra Jet (CJ). Cobra Jet engines received low-riser heads with a "rough-cast" combustion chamber (2.09int.-1.66ex. Your email address will not be published. Come join the discussion about restoration, performance, modifications, classifieds, troubleshooting, maintenance, and more! 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, it wasnt Ford Engineers that first developed this impressive powerplant. From 2013-2016, they used the 5.0 L Coyote engine as their powerplant. 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. are identical. The World's largest Ford had first introduced the public to the new Ford Cobra jet powered Mustangs at the 1968 NHRA Winternationals. 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. However, in true Cobra Jet fashion, Ford underestimated the horsepower from the factory. The 428 Cobra Jet powered some of the fastest Ford Muscle Cars from 1968 to 1970, over nine Ford and Mercury models. Ford Cobra Jet Guide - History, Specs, Engines - 1968-2020 Reportedly, they didnt even let Tasca leave with the car. Most 428s in 7 liter [COLOR=#0000ff! All 428's had 2-bolt mains also. 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. : For registered members this ad will NOT show. YES! ). The big reason a 428CJ makes more horsepower and torque than a PI is the superior heads. An improved crank and rods were also part of the deal. Although the '67 Mustang looked a lot like the original, it was, in fact, a completely new car with no interchangeable sheetmetal. The 428 CJ and SCJ blocks have extra main bearing webbing and thicker main caps than the normal 390 or 428. For the most recent 2018 Ford Cobra Jet, Ford used their modified Coyote variant, the 5.2 L Voodoo. See more Reply Save Like 1 The difference was forged pistons, solid lifter cam and four bolt mains. Ranging from common problems info to performance modification guides, we cover everything muscle car. Another Dumb Question: 428CJ vs 428SCJ - Club Cobra Ford based the 429 Cobra Jets on their 385 series of V8 engines. For a better experience, please enable JavaScript in your browser before proceeding. The C blocks started to be used in mid 1967 before the CJ production started. Mixing SCJ and CJ parts can cause severe balance problems. Ford gave the electric Cobra Jet its name because it produces 1,400 horsepower and 1,100 lb-ft of torque. 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.

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