I am a 351W guy. With the elimination of the 428 Ford Cobra Jets after 1970, this left only the measly, low compression 351 Cobra Jet as the only one remaining for 1972-74. The main bearing journal diameter measures between 2.7484 and 2.7492 inches. The World's largest Introduced at the height of the high-performance wars, big-block Cobra Jets acquitted themselves well in the Mustang and in other cars. Unlike the 351, Ford based the 428 Cobra Jet and Super Cobra Jets on the FE series of engines. FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428) - difference in 428 blocks? The factory ratings were intentionally low for insurance reasons. 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. The World's largest non biased Shelby Cobra related site! The engine engineering personnel who worked for me on the 428 program were Paul Lampela, Frank Gondoly, Bob Snider, and Matt Hecht. valves), and the valves were closer together than on other FE heads so that the CJ . The real cobra jet block had reinforced webbing as well as a higher nickel content, i.e. The 396 was a durable and slightly detuned racing engine that ran very hard. Unless specifically noted this comparison does not include the parts that are unique to the 428 Super Cobra Jet engine. He had been involved in the Thunderbolt program back in 1964. Super Cobra Jet Connecting Rod The largest was the 390 cid, which Ford first brought out in 1961. Super Cobra Jet horn detail (note the jumper wire and reinforcement bracket) If so, please consider sharing a picture. The 406 was essentially a bored 390, and in 1963 Ford went even bigger and bored the 406 out to 427 cid. 1999 - 2022 Scott A. Hollenbeck. The Model T has long been considered one of the greatest manufacturing feats in modern history, and Fords flathead engine transformed V8s for the future. If you don't put the 428 in it you should get a 460 instead of the 429 for even more power. The cars ran very well and won in the Super Stock category that year. These had the larger 600 cfm 4100. Very few were ordered because of the popularity of the new Mach 1 package. non biased Shelby Cobra related site! YES! The value is markedly different (about double). The 428 SCJ was first introduced during the 1969 model year. The World's largest First, the 1969 price list: April 17, 1969 Mustang Drag Pack Option Description, June 1, 1970 Mustang Drag Pack Option Description, Cobra Jet Connecting Rod Mustang buyers who selected either of the optional 3.91:1 or 4.30:1 rear end gear ratios got more than just an optional axle ratio! 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". During the 1970 model year, "DETROIT LOCKER DIFFERENTIAL" appears on the invoice of vehicles that came with a factory Detroit Locker. 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. Besides the T-Bird, there were Galaxies, Thunderbolt Fairlanes, Mustangs, Torinos, and both the AC Cobra and GT 500 Shelbys. I spoke to Rob Celedon the other day and his SCJ car has the same stamp on the block. The 429 Ford Cobra Jet pumped out 370 horsepower, while the Super Cobra Jets pushed out 375 horsepower. Incredibly, he too put a 428 cid block in his Mustangs, but he took it a step further than Shelby. Yet, while they were considered big blocks, the first generation of the Ford FE never had displacements of larger than 400 cid. For the 429 Ford Cobra Jet carbs, there were either 715 cfm or 780 cfm 4 bbl options. 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. 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. When the buyer selected the CJ option, the GT option became mandatory. 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. 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. Yikes, that's huge! In lieu of reverting back to the factory 428 head castings, Tasca put heads from the 427 instead. 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. At the '68 NHRA Winternationals in Pomona, California, Ford entered a number of specially warmed-up '68 Cobra Jet Mustangs. While the engine was widely praised in car magazines for its performance, its large weight (720 lbs) was often chastised. not a chance, the 428 scj would out pull the 460 hands down. The 428 also got a single snorkel air cleaner and had a Holley 735 cfm carburetor. I have the option to purchase either one of them. 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! I'm not embarrased to ask anything anymore. Competition was tough in the late '60s, with both GM and Chrysler offering up serious big-block performance. Of course there's the Boss 429, but thats a horse of completely different color. Ford introduced their second generation of FE V8 big block engines in 1962 with the 406 cid big block. 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, for many, it was far too inconspicuous for them to realize it before seeing its taillights. The 429ci Cobra Jet was a different entity entirely. 427 cobra jet vs a 69 boss 429 | Ford Mustang Forum 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. stronger. I actually have some kind of answer that I hope will help. 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. It was powered exclusively by a 428 in either CJ or SCJ fashion. 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 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. What Is the Shelby GT500 KR Police Interceptor? | CJ Pony Parts Some of the other unique facts about the 428 are that it's externally balanced and due to the different piston and connecting rod combos used by the factory. As an Amazon Associate I earn from qualifying purchases. Compression ratios were lowered considerably, and with this, performance often went out the window. 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. 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. You cannot really compare 69 with the 74 cars. All of this was a step in the right direction, but the '67 GT500 was still slower than the rip-snortin' 375hp 396 Camaro. Also does the cj have a lot of low end. It came in T-birds and full size Fords in the late 60's and early 70's. The value of a Cobra Jet will differ, depending on the body style, options, and year of the car. The 428 CJ and SCJ blocks have extra main bearing webbing and thicker main caps than the normal 390 or 428. 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. Of course there's the Boss 429, but thats a horse of completely different color. 1970 Ford F100 2WD SB 447 Strokered FE w/ T19 Bullitt390 New Member But as the 1,500 whp 2020 Ford Cobra Jet showed, that might not be a terrible thing. It was only installed in mid-size (1970-71) and pony cars (1971 only). 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. A forum community dedicated to Mercury Cougar owners and enthusiasts. You might as well lead the way. 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 block and head are both cast iron, and the bore and stroke were 4.13 X 3.98. Starting in February 1969 this complete package could be ordered as the "Drag Pack" option. I want to register an account for free right now! The package included special capscrew-type connecting rods borrowed from the Ford GT Mark IV 427 Le Mans engine. Hi Keiththis Ford Article isn't the best scan I've ever done but the article is very, Location: Abe Lincolns Birthplace, JavaScript is disabled. Register now for free! 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. 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. A lot of people try to pawn off a 390 as a 428. the blocks are nearly identical and the stroke is close. A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. 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. Lets look at the differences between a 428 Cobra Jet and the 428 Super Cobra Jet engine, shall we? In the 60s-70s, Ford put the Cobra Jet and Super Cobra Jet engines in Mustangs, Thunderbirds, and of course, Cobras. These cars ran the quarter-mile in the mid-11-second range, quick by any standard. In the March 1968 issue of Hot Rod magazine, a 68 Mustang CJ ran a 13.56-second quarter-mile time, traveling at 106.6 miles per hour. The 428 Police Interceptor Engine The 428 police interceptor engine could be found on both the 1967 Shelby GT500 and the 1968 GT500KR. Sold it, big mistake. Cobra Jet Crankshaft (engineering number detail) The 1969 Ford Fairlane Cobra was a 1969-only option and was available in either a Formal Roof Hardtop or a Fastback form. First you have to start with the 428 v.s. Super Cobra Jet horn reinforcement bracket Whenever a . . 1969 Ford Mustang Mach 1 428 Super Cobra Jet Muscle Car Of - YouTube Sorry, here's the other page. The fifth digit in the VIN on any Ford from 1968-1970 tells you whether or not a vehicle came with this engine or not. The Mustang had grown bigger than ever, with a weight of nearly two tons. Then there was the 429 Cobra Jet (CJ). 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). The Mustang now had company in the ponycar market, and the new Camaro was no slouch. In the quarter-mile, a one-second difference is a lot of car lengths. Chevrolet wasn't Ford's only problem in the performance department. However, Ford ran into a problem. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. 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 385-series 429 and 460 are also good street-strip engines, with their canted valves and large bearings. But of course, it was too late to change the name. It's important to note that all other components of the SCJ engine do in fact interchange with the CJ engine. Why wouldn't an aluminum headed 351W be the best option -- then you don't have to change the rest of the driveline. 428 Police Interceptor, and 429 ThunderJet, used in big luxury cruisers. 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. This was the year that stricter emissions laws went into effect, and emphasis was shifting away from performance. : For registered members this ad will NOT show. A police interceptor may have an "A". Register now for free! Combined with their burgeoning competition with the new Chevy Camaro, Ford decided to put a modified 428 heavily based on Tascas 428 into the Mustang for 1968. His cars had been very successful, and word on the street was Tasca's cars were working very well. 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. What's the difference between a 428, 428 Police interceptor, and a The 428 is a 1969 block no heads. The stage was set, and war was waged in earnest. 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. They have released new Cobra Jets every two years, with 2022 being the first exception so far. Also, 1969 was the last year of production for the famous Mustang GT. 1969 and 1970 CJ vs. SCJ parts identification. None of the parts of the 428 SCJ reciprocating assembly interchange with their 428 CJ counterparts. Be sure to subscribe if you like content like this! chuck, The same naming convention was applied to the 429 engine as well. 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. Your email address will not be published. Pontiac had its GTO as well as the new twin sister to the Camaro, the Firebird, and each was available with a 400ci engine. You should feel lucky to have driven your 69 Bird. 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. Can be ID'd be block casting numbers of C8SE, C9VE, D0VE, D1VE among others and head casting numbers of C8SE, C9VE, D0VE among others. As it turned out, the 427 heads massively improved both low-end torque and top-end power on 428. Never looked at or worked on any big block other than a 390. 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. As we all understand, the 390 wasn't standing up to the 396, and sales reflected this. 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". Ford based the 429 Cobra Jets on their 385 series of V8 engines. Introduced during the 1969 model year, the 428 Super Cobra Jet used the same block as the Cobra Jet. The baddest of them all is the Boss 429. These are a few ways you can tell. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Great article, but the 68 Cougar wasnt offered as a convertible! Even less common with a production of maybe 3,000. 390 Vs 428 block | Vintage Mustang Forums The Cobra Jet 428 motors in Mustangs used heads from the 427, plus other enhancements to really put some hair on their chest. Known as the Thunderbolt, this Fairlane saw very limited production and was built as a factory lightweight race car. And this dealer-inspired Ford racing engine couldnt have appeared at a better time for the Ford Motor Company. I've heard this could be a Cobra Jet but I've also heard this might not be the case. With a few minor modifications, however, the 428 would really scream, and by the time the '68s came around, Ford was ready to rock and roll. 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 Oddly, however, Ford never revised the sandbagged horsepower claims. Yet, Ford did not use any of the second generation big blocks in pony cars like the Mustang at first. The error is described on the owner's Marti report; here's an excerpt. By 1974 the emissions crap that was added to the engine killed the power. They had introduced the 385 series in 1968 to start replacing the outgoing FE series. The 428 was basically a bored out 427, though it performed better and was more reliable. The 428 Cobra Jet was born by drag racers at a Ford Dealership to nudge FoMoCo in the right direction when they needed it most to help recapture the pony car market. Ford rated the engine at 335 horsepower and 440 lb-ft of torque, but that was probably understated for insurance purposes. Instead of a Cobra or Super Cobra Jet engine, the new Mustang Cobra Jets feature modified existing production engines. Its outstanding showing, including a first place finish, and immediate fan reaction prompted Ford to put the engine in production Mustangs. 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. A whole host of high-performance parts was available for the 396 from the Corvette larder, which further complicated matters in Dearborn. 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! Bought a new 69 Mach 1 and ran at the strip w best et 12.72. The 429 is known as a 385 family due, I believe, to the bore size being 385 centimeters. A date code correct 69 428 block could be worth a decent buck. It was available in the new Camaro in 325-, 350-, and 375hp forms (a 425hp version had been available in the Corvette for '65). Super Cobra Jet harmonic balancer counter weight, 1 Building Ford's Fabulous 429 Super Cobra Jet - OnAllCylinders The following year, the Super Cobra Jet became an option. Just as long as they dont add gimmicky speakers with faux-engine noise, like some of their competitors. Is a 428 a cobra jet or is the cj a special 428 and is the block different between the cj and non cj. Most 428 Cobra Jet fans have heard of the "Detroit Locker" differential, a positive locking differential that was originally produced by Detroit Automotive Products Corporation (DAPCO) and is now available from TracTech Inc. 428CJ /SCJ cars used shock tower reinforcements, thicker front sway bars, and beefier springs and shocks. 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. The big FE also became notorious as one of the powerplants for Carroll Shelby's outrageous big-block-powered version of the AC Cobra. non biased Shelby Cobra related site! 428 junk or Cobra Jet? How to tell. | Vintage Mustang Forums Sunroof has a big brain. Dr. The longer stroke (3.98 vs. 3.78 for the 427) gave the engine powerful low-end punch. 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. Massachusetts. 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. 3) An oil cooler Good luck. 428's never had cross bolted mains, unlike the 427 (and a few 406's). No other numbers are CJ. Ford really got it right with the 1968 428 Cobra Jet (CJ). However, it wasn't Ford Engineers that first developed this impressive powerplant. 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. It came in special Mustangs (and 2 Cougars) in 1969-70. An improved crank and rods were also part of the deal. The facts became clear once 428 CJ Mustangs and Fairlanes started running high 13s at the strip with zero preparation. Cobra Make, Engine: Posts: 717. The name is perhaps one of Ford's most enduring performance legacies. Block difference between a 428 and a 428 Cobra Jet - The FORDification 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. Ford Mustang Cobra Jet Engine - The History Of - MotorTrend For Ford, this meant the venerable FE-series big-blocks, which had seen successful service in the Thunderbird as well as other car lines. Most estimates put the 1968 Ford Cobra Jet 428s at north of 400 horsepower. 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. 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. I think, but don't remember, that the SCJ would come in cars optioned with the "drag pack.". Carburetors Of The 428 - Dearborn Pit Stop Blog We have 2 blocks here-both are 428s but one has some additional webbing on the main bearings. 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. The package was also available in the Torino, the Fairlane, and the Mercury Cyclone. They did have a few XR7-G Cougars built that came with the first factory retractable sunroof though! Comparison of Major 428 Engine Components - 428 Cobra Jet 428 cobra jet vs. 460. i was wondering if a 428 cj or a 460 would be a better engine for a street rod. (REGISTERED USERS DO NOT SEE THIS POST/AD! http://www.mercurycougar.net/gallery/showgallery.php/cat/500/ppuser/5281/perpage/12/sort/1, http://www.428cobrajet.com/facts.html#five. 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. With more than 400 lb-ft available from 2,600 to 4,700 rpm, the Mach 1's tail is sure to be obscured in clouds of tire smoke. The heads ID themselves. Lets check out the eight fastest Ford Muscle Cars powered by a 428CJ and 428SCJ, shall we? The company was aware of the new Camaro project brewing over at Chevrolet. ID by casting number on the block of C9AE. * These are service part numbers, not engineering numbers. Luckily, Tasca Ford pioneered a high revving 428 engine nicknamed the KR-8 as a direct replacement for the low-revving 390 FE engine. Yet, in 2008, Ford brought back the Cobra Jet badging for its 40th Anniversary. With a bore and stroke of 4.36 X 3.59, the 429 has a larger bore but smaller stroke than the 428s. Upgraded C6 with higher shift speed and modified clutch packs, New 6" HG with miminal exhaust restriction mufflers and pipes, Revised for staggered shock absorbers to eliminate reverse gear tramping. w/sunroof, 69 XR7, '67 XR7, '68 Std., '70 Std. The Formal Roof versions were the ultimate sleeper, looking like your average everyday grocery getter to any unsuspecting contenders that pulled up next to it at a red light. Cast iron exhaust manifolds. However, there were a few key internal differences between the two engines. 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. Sales success of the Mustang had been phenomenal in its first two years, and Ford wanted more. 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. 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. In four years of its existence, the Cobra Jet name became synonymous with high-performance. 428 Cobra Jet History, by Bill Barr Get The Top 50 Fastest Muscle Cars chart. The C blocks were later. 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).
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