So instead, you have to examine the axle code on the door tag for a V or a W to verify its legit. I was wondering if anyone knows the difference between a regular 428 block and a 428 Cobra Jet block. The 715 was a Ford replica of a Rochester carb, and was fitted to the base Cobra Jets. The 428 had a bore of 4.13" and a stroke of 3.98" and was produced from 1966 to 1970. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. See if you can determine if these motors you are looking at are CJ's. Comparison of Major 428 Engine Components - 428 Cobra Jet If the 69 428 is the real deal buy it. I've heard from others who've reported finding C6AE-C, C6AE-D, and C6AE-F rods in what they believe to be original engines. All of this was a step in the right direction, but the '67 GT500 was still slower than the rip-snortin' 375hp 396 Camaro. The birth of the Cobra Jet engine package from Ford was in response to external pressures. 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. 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 basic casting is the same, but a 428 had a 4.13 inch bore and the 390 has a 4.05 bore stock. 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. 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. The smaller bore of the 428 was well within normal production line capabilities. 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. 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. In fact, Ford had seen the writing on the wall. Both the Cobra and Super Cobra Jets had dished cast pistons, and used stronger connecting rods than the standard 428. Both were used on 428 PI, passenger car and Cobra Jet applications. The Mustang still used small blocks in their engines, with the 289 cid being the largest available. Cobra Make, Engine: Everett-Morrison LS1, IIRC look at the exhaust manifold bolt pattern-------------the 390GT and 428CJ had a different bolt pattern (had some more holes and an tab on the head for the pattern--the standard engines only had the vertical pattern with a bolt at top and bottom of port, Cobra Make, Engine: Kellison Stallion 468 FE, Cobra Make, Engine: Kirkham 427 brushed aluminum with Keith Craft 527C.I. Ford 7-Liter Engines Deciphered: 427, 428, 429 | Themustangsource In 2020, Ford switched from massive superchargers to an all-electric platform, but dropped jaws by making 1,500 wheel-horsepower a worthy trade-off to get rid of the internal combustion engine.The future of the Cobra Jet is unknown, and its unclear whether Ford will ditch petrol for good and switch to electric, or if that was a one year anomaly. 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. Register now for free! A police interceptor may have an "A". The 429 was not produced until 1969. 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. By far and away the most common -- they made 100,000+ of these. Not Ranked. In seventh place is the 1969 Ford Fairlane Cobra. Ford discontinued the 429 Cobra Jet and Super Cobra Jet options after 1971, largely due to the increasing emissions restrictions. 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. The 1967 Shelby GT500 featured a new 428 cid engine that had been used in the Thunderbirds and Galaxies. Ford countered by introducing the FE-series 390ci V-8 engine for the '67 Mustang. Starting in 1966, you could also get a 428 Police Interceptor (only sold to police entities). It was powered exclusively by a 428 in either CJ or SCJ fashion. The baddest of them all is the Boss 429. It had four bolt mains, aluminum hemi-style heads and looked like no other engine. Cobra Jet Mustang production continued into 1970. 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 FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - difference in 428 blocks? Incredibly, he too put a 428 cid block in his Mustangs, but he took it a step further than Shelby. None of the parts of the 428 SCJ reciprocating assembly interchange with their 428 CJ counterparts. All Rights Reserved. Besides I have a reputation now First you have to start with the 428 v.s. Super Cobra Jet Connecting Rod : For registered members this ad will NOT show. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. 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. I'm not sure about how well a 429/460 fits in '67-70's though. The big-block Chevy had the edge in breathing ability, but this move closed the gap between the two engines a great deal. The name is perhaps one of Ford's most enduring performance legacies. I spoke to Rob Celedon the other day and his SCJ car has the same stamp on the block. Chevrolet wasn't Ford's only problem in the performance department. The 428CJ was available in nine Ford, Mercury, and Shelby muscle car models between 1968-1970. Cobra Jet | Hot Rod Forum The 428 was available as a 68 1/2, 68 and 70 model. The Cyclone was now part of the Montego family of vehicles. Very rare and very expensive as only about 1,200 were made. Say Cyclone CJ. Ford Cobra Jets came in either 351, 428, or 429 cid displacements, and there were also Super Cobra Jets, too. Yikes, that's huge! JavaScript is disabled. Super Cobra Jet Crankshaft Some SCJ block had the word "super" stamped on the rear. Never looked at or worked on any big block other than a 390. See more Reply Save Like 1 But there are other types of 428's and 429's floating around out there, built for different purposes, i.e. Is a "Q-code" a Cobra Jet and an "R-code" a Super Cobra Jet? | Mustang Consequently, Ford used Holman Moodys 428 engine as the inspiration it desperately needed to help reclaim its rightful place at the top of the pony car market. 1968 was the year the wild Mustangand all other Ford modelsfell prey to the untamed Cougar. Super Cobra Jet harmonic balancer counter weight, 4 Competition was tough in the late '60s, with both GM and Chrysler offering up serious big-block performance. The 429 SCJ was a stronger version on the CJ. What is the difference between a 428 and 429. The 428 is a 1969 block no heads. The car automatically became a Super Cobra Jet. . 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. Ford gave the electric Cobra Jet its name because it produces 1,400 horsepower and 1,100 lb-ft of torque. After that nothing but C blocks were made. According to Ford themselves, independent dynos showed electric Cobra Jets making north of 1,500 wheel-horsepower. 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. Although the '67 Mustang looked a lot like the original, it was, in fact, a completely new car with no interchangeable sheetmetal. The 429 is known as a 385 family due, I believe, to the bore size being 385 centimeters. The 1968 Mustang received several styling updates, including side scoops, steering wheel, side marker lights, and gas cap. 428 CU IN stuff I copied from the net: Introduced in 1966 Bore and stroke of 4.13X3.98 Cast iron crankshaft forged-steel connecting rods cast iron intake manifold 345 horsepower @ 10.5:1 compression ration Variations of the 428 existed throughout its' life span, including the 428 Police Interceptor, 428 Thunderjet and 428 Marauder. This explains why Ford went with the 390 in the Mustang instead of the 427. 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). Most of the differences have been listed except for one major difference. Increased Ebay value in a few strokes of a hammer! The 429/460 is going to be the cheaper of the engines to build. I have the option to purchase either one of them. The package was also available in the Torino, the Fairlane, and the Mercury Cyclone. You can have it straight (CJ 428) or with optional CJ 428 Ram, the breathtaker. 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. Just as long as they dont add gimmicky speakers with faux-engine noise, like some of their competitors. 1968 was the only second year of the Cougar, which only received minor revisions, including side marker lights and front shoulder belts. 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. 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. Factory horsepower and torque ratings were the same for both CJ and SCJ engines. 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. The 428 CJ and SCJ blocks have extra main bearing webbing and thicker main caps than the normal 390 or 428. SCJs seem to use the C6AE-E rod most frequently, though again I've seen written reference to a C9ZE-A rod that I haven't been able to confirm was ever actually factory installed. Cast iron exhaust manifolds. 427 vs. 428 vs. 429 | Ford Muscle Cars Tech Forum The V-code designated a 3.91:1 rear axle ratio, while the W-code meant a 4.30:1 rear axle ratio. Ford introduced their second generation of FE V8 big block engines in 1962 with the 406 cid big block. A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. 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! The new Mustang was beautiful, and it had a large enough engine bay to take the big mill. Block difference between a 428 and a 428 Cobra Jet - The FORDification As a result, the 428 was less rev-happy but it gained a low-end torque punch that was absent in the 427. 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. But, for many, it was far too inconspicuous for them to realize it before seeing its taillights. The A blocks were the earlier type. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Great article, but the 68 Cougar wasnt offered as a convertible! Bought a new 69 Mach 1 and ran at the strip w best et 12.72. Massachusetts. While the engine was widely praised in car magazines for its performance, its large weight (720 lbs) was often chastised. 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. Last month, we brought you Part 1 of 3 on how to detail a 428 Cobra Jet engine to concourse level, with Marcus Anghel of . 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). 428 Cobra Jet History, by Bill Barr Introduced at the height of the high-performance wars, big-block Cobra Jets acquitted themselves well in the Mustang and in other cars. But there are other types of 428's and 429's floating around out there, built for different purposes, i.e. Also does the cj have a lot of low end. A whole host of high-performance parts was available for the 396 from the Corvette larder, which further complicated matters in Dearborn. I'm not embarrased to ask anything anymore. The Super Cobra Jet, available only with a 3.91 or 4.30 rear axle ratio, included additional features. all aluminum FE, Check the intake casting number, the head casting number and if the heads are of the bore and stroke. Makes you wonder how many were built at the other plants. From 2013-2016, they used the 5.0 L Coyote engine as their powerplant. I won Winter Nationals at Beeline Dragway in DStock Class at 13:05 118 mph in 1970 with my 428 CJ Mach. YES! The block and head were both cast iron, but some models may have had aluminum intakes instead of cast iron. Please notethe 428 and 429 are completely different classes or families of engines. As referenced earlier, the 390 was a 4.050 bore and a 3.781 crank. 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. This was not enough to beat the big-block Camaro, however, which ran the quarter a full second quicker. Instead of a Cobra or Super Cobra Jet engine, the new Mustang Cobra Jets feature modified existing production engines. Even an external oil cooler was part of the deal--not bad for $6.53. The CJ 428 engine was the top-of-the-line performance option that replaced the former performance heavy-weight 427 CID V-8 in April 1968. The GT500 wasnt quite as fast as the Camaros, though it was closer than the 390 powered Mustangs. Ford had introduced the 385 series in 1968, and the 429 first appeared in the Thunderbird. What makes the 428 Super Cobra Jet engine so super? The cast iron intake manifold was a high-rise style, which was exceedling heavy at 90 lbs. A common misconception seems to be that SCJs were originally equipped with forged pistons and CJs were originally equipped with cast pistons. The World's largest The 406 was a serious development for Ford, as it catapulted them to NHRA and NASCAR victories in the mid-1960s. The 428 CJ cylinder heads featured an un-machined chamber of 73-76cc, 2.06" intake valves and 1.66" exhaust valves. Lets check out the eight fastest Ford Muscle Cars powered by a 428CJ and 428SCJ, shall we? Actually, rebuilding a 428 using modern methods costs significantly MORE than $2,500. In 1969, Ford created an even higher performance version, known as the 428 Super Cobra Jet. Well, there you have the top 8 fastest 428 Cobra Jets. 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 big reason a 428CJ makes more horsepower and torque than a PI is the superior heads. The '69-'70 Mustangs were nearly identical cars featuring minor cosmetic changes. Right to the end in 1970, the 335hp rating stuck. A remedy was in the making, as the 428 Cobra Jet package for the Mustang began its metamorphosis. 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. The real cobra jet block had reinforced webbing as well as a higher nickel content, i.e. The original Ford Cobra Jets never made it past the 1970s, as increasing emissions restrictions and environmental and energy concerns ended up converging to squeeze the Cobra Jets out of existence. Get The Top 50 Fastest Muscle Cars chart. 1968 428 Cobra Jet Drag Strip Modifications 428 CJ Mustangs at the 1968 NHRA Winternationals Drag Strip Performance The Straight Scoop on "Canadian" Heads Engine Information 428 Cobra Jet History, by Bill Barr 428 Cobra Jet vs. 428 Super Cobra Jet Comparison of Major 428 Engine Components Component Identification Engine Identification Codes 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 Holley four-barrel rated 600 cfm, 135 less than the 428 CJ), and rated output. non biased Shelby Cobra related site! One had spun on the crank bearing and all would have had to be resized, so Bill advised me. 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. 390 Vs 428 block | Vintage Mustang Forums 3) An oil cooler The error is described on the owner's Marti report; here's an excerpt. It was built only in 1970-71. 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. 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 stage was set, and war was waged in earnest. The Cobra Jet version of the 351 Cleveland was one of four 351 Clevelands Ford released that year. As mentioned, the 428 Ford Cobra Jets had 427-style heads, which had 2.09 intake valves and 1.66 exhaust controllers. However, in true Cobra Jet fashion, Ford underestimated the horsepower from the factory. In fact, the 428 was listed at 335 hp, the same as the 390. The Fora platform includes forum software by XenForo. Its not very well known, but Ford also branded another Cobra Jet from 1971-1974 the 351 Cleveland. 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. The Thunderbolt proved to be a very fast factory team drag racer--and proved again that the FE engine could be a formidable competitor. From 2008-2012, Ford used a supercharged version of their 5.4 L Modular V8. 428 cobra jet vs. 460 - Club Cobra Bore and stroke was 4.0 X 3.5. chuck, The same naming convention was applied to the 429 engine as well. Automotive magazines from 1968-1969 recorded eight of the fastest Mustangs, Fairlanes, Cyclones, and Cougars powered by a 428 Cobra Jet and Super Cobra Jet, ranging from 13.23 to 14.40-seconds in the quarter-mile ET with trap speeds of 99.4-106.6 MPH. Ford had produced a 428ci version of the FE engine for fleet use in police cars and also for some of the fullsize luxury cars. An improved crank and rods were also part of the deal. 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. Now. Component Identification | Mustang 428 Cobra Jet Registry This field is for validation purposes and should be left unchanged. First you have to start with the 428 v.s. 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 limited number of Cobra emblems placed strategically on the exterior warned people what lurked under the hood. Actually, about 400 hp were on tap in this incarnation of the 428. Even less common with a production of maybe 3,000. However, the Ford production database describes the car as having an S-code 3.50:1 traction-lok rear. In 1967, this changed when they put the first generation 390 big block in the Mustang. YES! When this 428ci engine was installed in the Mustang, Shelby called the car the GT500. 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. Typical Cobra Jet Crankshaft Several different cranks were used in 428 CJ and SCJ engines during the course of production. A lot of people try to pawn off a 390 as a 428. the blocks are nearly identical and the stroke is close. 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. Of course there's the Boss 429, but thats a horse of completely different color. 428 Cobra Jet Engine Detailing, Part 2 - MotorTrend 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. 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.

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