Instead, it was "Tasca Ford"—the second-largest Ford dealership in the world in the 1960s—that inspired the 428CJ revolution. A special option available for 1969 in the Cobra Jet Mustang included a 428 with internal modifications. The 428 Cobra Jet engine used a nodular cast iron block and crankshaft, forged steel piston rods and aluminum pistons. Another way to tell if it might be a 428 is to remove one spark plug, take a stick or dowel and measure the stroke of the piston, it should be 3.980", a 390,406, or 427 will have a 3.780" stroke and a 330,352,or 360 will have a 3.500" stroke. I have been doing some research on this and are the industrial blocks cast from a lower grade iron? It was based on the staid 428-cid big-car engine, but had larger valve heads and the race-brewed 427's intake manifold. The 428CJ also used a superior cast iron intake and better exhaust manifolds. This is to offset the heavier LeMans rods used in the SCJ. 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. Best low end torque. Does running on propane or low rpms as a pump. The 428 Cobra Jet, launched in April 1968, was a version of the 428 FE engine built for performance rather than cruising smoothness. I went online and got some info on verifying it as a 428 & a CJ by the numbers on the . Only show this user. The CJ block varies from the plain 428 in that it has extra webs cast into the main bearing saddles, whereas the plain 428 does not. 22 Though some claim the 428 CJ actually made in excess of 400 hp, we observed 365.1 hp at 4,800 rpm, almost 10 percent more than advertised. The low riser, revised, 427 heads had huge rectangular ports. Visit site. Both are unnessarily heavy, and no better performers than what the aftermarket offers now. Note the difference in engine speed between the two specs. 1. 2000-09-03T19:44. . The 429 was not produced until 1969. They have the welbs as well on the inside of the block for cross bolts mains but not drilled yet . 2) Cast iron PI (Police Interceptor) intake manifold. Only show this user. In 1967, Bob Tasca Sr. combined race-proven engineering with factory Ford parts to create a high-performance Mustang supercar dubbed the KR-8. The 428 unit is maybe worth $100. It's amazing the difference between a 428 and 429 cobra jet engine. Last edited: May 19, 2013 FrozenMerc, May 19, 2013 SHARE POST #3 hoop98 Member DO NOT confuse this with any 428 out of a Tbird. There was also the MEL (Mercury-Edsel-Lincoln) fat block displacing 430 and 462ci produced from 1958-68, a low-revving luxury car . May 18, 2006. The 428-4V Cobra Jet was available in two basic forms: with and without Ram-Air. The C9OE-H . The Cobra Jet (original 428) was put together from parts from the Ford parts bins, the rods and heads were used in earlier engines but aren't referred to by any other name than Cobra Jet since. Too bad can't get the vin off the block to see what year the engine. The Q-code Cobra Jet 428 was rated at a very conservative 335hp @ 5600rpm. A special dual-plane intake manifold held the mammoth Holley carb. These are a few ways you can tell. . Hell for under $8000 you buy brand new from Ford their . A 429 has a 3.590" inch stroke, and a 460 has a 3.850" inch stroke.just a hair over a 1/4" inch extra stroke. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. Aug 18, 2021 at 1:27pm. Does anyone know the difference between the 428 fe industrial block and the 428 fe cobra jet blocks? The first step in detailing a 428 Cobra Jet engine is to make sure you actually have one, versus a 390 or standard 428 block. The seller doesn't supply any photos of the engine bay. Of these, four of the cars made it to finals, proving the impressiveness of the Cobra Jet engine. The heads and intake were unique to the 428CJ. True output for both engines touched 400 horsepower at the very least. The IUA SCJ uses the hatchet crank spacer. And from what I understand the blocks are thick enough to support a 4.13 overbore. 1970 Ford F100 2WD SB 447 Strokered FE w/ T19 Bullitt390 New Member As a result, the 428 was less rev-happy but it gained a low-end torque punch that was absent in the 427. Note the differences here between the original-style spacers shown and the service replacements that were sold over the counter. In the quarter-mile, a one-second difference is a lot of car lengths. 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 Cobra Jet. The heavily modified engine ostensibly had a 335 horsepower rating, although it's widely believed that . The 428 had a bore of 4.13" and a stroke of 3.98" and was produced from 1966 to 1970. The 429 was short lived and I will admit that it has more potential than the 428, the project really never left the ground. It also had ram-air induction and a functional hood scoop. It has been sitting in storage for years and he would like to sell it. The 428 police interceptor engine could be found on both the 1967 Shelby GT500 and the 1968 GT500KR. The crank used in 428 CJ and SCJ engines is made of cast iron with a 3.98-inch stroke. The Cobra Jet heads have been given a minor bowl clean-up, but are otherwise stock. The 428's were a 4.13 bore block and a 3.98 stroke crank. Save Share. The primary and most significant difference will be the heads. The valve stem diameter is 0.371 inches and the valve lifters are hydraulic. The difference in cubic inches comes from the crank stroke. The Cobra Jet 428 motors in Mustangs used heads from the 427, plus other enhancements to really put some hair on their chest. Although it had nearly the same displacement as the 427, the 428 was much easier to build, and it featured a 4.13 inch bore and a 3.98 stroke (compared to the 3.784 inch stroke found in the 427 and the 390). 1966 428 Police Interceptor balance and blue printed by I (Jesse) at Fast Fords I would like to give God the glory for giving me the ability to build these m. Apr 23, 2008. The Cobra Jet used heavier connecting rods with a 13/32 rod bolt and a nodular iron crankshaft casting #1UB. also, the 428 Police interceptor was pretty good. . The 428 Cobra Jet is perhaps the best and certainly one of the most popular street performance FE engines. There is a difference between the standard 428 and the 428 Cobra Jet block. The difference between the earlier and later versions of the pump is the location of mounting points for either generator or alternator brackets. V-8. The most notable Ford FE-based performance engines are the 427, the 428, and the 428 Cobra Jet. But, from the factory it was never as powerful as the (solid lifter) 427. Maybe even throw a little nitrous on top of that 428, and call it a day. The early design has an inertia ring that is 0.75" wide with a groove in it. 6 65Custom Registered Although it doesn't tell for sure about the block it will confirm whether the crank is a 428 stroke. . It is difficult to decode one when installed in a car, but when it is out there are a few things to look for. 428's never had cross bolted mains, unlike the 427 (and a few 406's). The 428 broke many speed and time records which I am unaware that the 429 did any. The largest differences are that the 427 has a very large bore and, comparitively, short stroke. That crank will have stamped on the crank UB . cobra jets have bigger ports, valves, and manifolds,the engines are built for more heavy duty performance. both 427 and 428 are "FE" style engines. There was also the 428 Cobra Jet and Super Cobra Jet; horsepower ratings were the same with both. Measure the intake valve diameter. The following were the differences for the SCJ: 1) The 427 'LeMans' connecting rods, which are thicker and stronger. The 428 Cobra Jet could be made on a regular production line, not requiring the exacting tolerances required by the 427. Measuring 2.34" X 1.34", the ports were larger than the 427 racing heads. High costs kept the 427 largely in pit lane, with very few production cars benefiting from its hard-won performance capabilities. The two-barrel 390 was good for 265 horsepower, the four-barrel stepped up to 325, and the Cobra Jet 428 provided just ten additional horses but a fair torque boost to go with it. R. . The valves are bigger but the real improvement is the exhaust port which is both wider internally and straighter plus higher exit point in the casting. 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). The 428 Cobra Jet was a performance version of the 428 FE. Although the 428 (and its Cobra Jet variant) was a great street engine when installed in certain Galaxies, Police Interceptors and Mustangs, it also had very tight tolerances and cost more to manufacture than it ever made for . Show All. This is a nice damper. Fastest AFR headed BBF on 460Ford.com. somewhat less, these were also installed on 70's jet boat motors. 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 428 Cobra Jet has greater low-end torque than the 427, thanks to its longer stroke. However, it wasn't Ford Engineers that first developed this impressive powerplant. The exhaust valve diameter should be 1.551 to 1.566 inches, with the CJ engine measuring between 1.652 and 1.660 inches. Smith noted that the 428 Thunderbird 7-Litre V-8's engine block actually edges out the later Cobra Jet 428's engine block slightly in strength and thickness--but according . Firstly, "Cobra Jet" is the coolest engine name ever. The big reason a 428CJ makes more horsepower and torque than a PI is the superior heads. Ford's legacy of powerful big block V8s dates back to 1958 with the skirted Ford FE Series 332/352ci engines that ultimately grew to 427ci by 1963 and 428ci by 1966. Both sets of heads use identical valve sizes, and were both tested with a clay radius on the intake port and a 1 3/4" pipe on the exhaust . The GT500 KR uses two small lift hooks in 1968. The IUB is a 428 CJ crank so yes it'll fit in the 428 block. There's also a chance of the CJ being a 4-bolt, but not all of them were, and 4-bolts sometimes found their way into TJ's. Fastest street legal BBF on 460Ford.com. Sponsored Links # 4 ( permalink) 09-15-2013, 09:23 PM Not Ranked Check the intake casting number, the head casting number and if the heads are of the bore and stroke. Most 428s have a weld A on the back of the block . The 428 has many more years of development and the CJ/SCJ was pretty much the final product. The "SUPER" mark does NOT mean that the pistons were used only in SCJs! It's difficult to convert a standard Ford 390 into a 427 or a 428, but you can stroke it out and push respectable power with the right cam, heads, and a solid fuel and ignition system. The 428 CJ and 428 SCJ were both rated at 335 horsepower which was a wink-wink - "yeah right" horsepower rating. 3) An oil cooler That's basically it. Building Ford's Fabulous 429 Super Cobra Jet. it was used in t- birds,LTDs, and torinos. Emissions-wise, a pretty dirty motor though. The Mercury 410 was a 4.05 bore 390 block and a 3.98 stroke crank. Both engines are FE series engines but have different characteristics and specifications. What intake ? Another thing to consider is the 429 'Thunder Jet'. 4 . Reply. The CJ block differs from the plain 428 due to the additional webs cast into the main bearing saddles. The SCJ block is the same as a CJ. There is a difference between the standard 428 and the 428 Cobra Jet block. The later IUB CJ and IUA SCJ were 69-70 428 cranks. Then, on April 1, came the 1968 Ford Mustang 428 Cobra Jet. 429? The 428 CJ/SCJ was a powerhouse for sure, and in the lighter bodies was lightning quick. The differences for the SCJ were: 1) The beefer 427 "LeMans" connecting rods. It was the old 428 block with a lot of changes. Step 3. Differences lie mostly in the main bearing webbing, which is something you must be mindful of, depending upon how you will use your engine." . The 428CJ's with oil cooler (popularly called SCJ or Super Cobra Jet ) and 3.91 or 4.30 rear axle ratio used another . Whenever a . The 428 CJ and 428 SCJ were the Mach 1's best performance engine options. With the Muscle Car horsepower race escalating for the 1968 season, Ford Motor Company introduced its all-new 428-cubic inch Cobra Jet engine. The SCJ block is identical to the CJ block. The Cobra Jet was a high-performance version of Ford's 428 big-block and it was so laughably underrated that even the NHRA ignored Ford . The connecting rod journal diameter measures between 2.4380 and 2.4388 inches. There are two common dampers for the FE: The 1958-1967 design and the 1968 to 1976 design. The flow data shown at right shows a comparison between out of the box Edelbrock heads and factory Ford 428 Cobra Jet heads. He bought (what was to told him) a 428 cobra jet engine w/ C6 trans & driveline out of a 69 Gran Torino. The 428 should be between 2.022 and 2.037 inches, with the CJ engine measuring 2.080 to 2.097 inches. The intake most times have a stock intake ...Now a cj 428 is externally ballanced with a round weight behind the ballancer on the outside . I know where there's one right now. Information on the 1968 428 Cobra Jet Engine with Automatic transmission The 1968 Cobra Jet was introduced in April 1968. We have 2 blocks here-both are 428s but one has some additional webbing on the main bearings. The 428 CJ and SCJ blocks have extra main bearing webbing and thicker main caps than the normal 390 or 428. The main bearing journal diameter measures between 2.7484 and 2.7492 inches. FE Big-Block Forum: Difference between a 428 & a 428 cj . The SCJ block is the same as a CJ, and to that they added 427 "LeMans" connecting rods, better intake manifold, and an oil cooler, plus crank, rods, pistons, wrist pins, flywheel/flexplate 13. Answer: Q: What is the difference between a Ford 427 and 428? The Ford 427 is a race engine that first made its appearance in 1963 1/2 Galaxies and ceased being available in any production cars after 1968. . Comparing the 428 to the 429 is unfair for most compare the 69-70 Mustang with the 428 to the 71 with the 429, and the 71 body is a bit heavier. The CJ was an engine option, the SCJ the upgraded version of the 428 CJ was what . The 428 Cobra Jet used an external oil cooler as well. The 410 utilized a 390 block and 428 crankshaft and was actually a production standard for some 1966 and 1967 Mercurys. With 335 hp, the potent 428 CJ offered a huge leap in power over the smaller 390-cube V8, which was the . I think the only change I would make to this particular car is to possibly swap in a Tremec T56 Magnum XL 6-speed manual transmission. One of the easier things to look for is the "C" that is sand-cast in the back of the block, as shown in . I've heard this could be a Cobra Jet but I've also heard this might not be the case. The longer stroke (3.98 vs. 3.78 for the 427) gave the engine powerful low-end punch. Nov 13, 2013. The latter has a 1.10" wide inertia ring with no integral pulley groove. That's bull%$#@. There is actually a visual difference between the ones made in 1968 and later years. The 410 was a 66-67 Mercury only engine option. Ford crankshafts are identified by basic part number 6303. The IU was the very first 428 crank to come out in 66 and used till 68 in the std 428,428PI and the 410. As old as it is, all the valves, springs, retainers, locks, shafts, rockers, etc, should be replaced with at minimum, OEM quality (readily available through "normal" engine parts sources). Ford claim 335 hp at 5200 rpm for the 428 Cobra Jet versus Huntington's analysis which determined output closer to 410 hp at 5600 rpm. Most have the 1ub cranks and the good rods. 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. Connecting rods are similar to those used in the 390 GT, but CJ and Police Interceptor engines are fitted with 13/32" bolts. Where the two differed was bottom-end construction. What is the difference between 428 CJ and 428 SCJ? GT500 KR models all used the Cobra Jet engines. Nascar soon after the release of the 429 put a . Actually, rebuilding a 428 using modern methods costs significantly MORE than $2,500. I'll bet that you were hoping that we would be lifting the Mustang's hood to reveal the original 428 Cobra Jet V8 and the 4-speed manual transmission. A true Cobra Jet block will have a C cast in the back the block where the bell housing bolts up. This pump is for a vehicle equipped with a generator. The 428 Cobra jet. . Launched in April 1968, it was built on a regular production line using a variety of cylinder heads combined with a 735 CFM Holley four-barrel carburetor. The 428 was the same Cobra Jet engine offered in the stock big block Mustang. chrlsful. You would be better off today with new Cobra Jet heads or the new Jon Kaase BOSS 9 aluminum head. This combination would have fired the Mach 1 through the ¼ mile in around 14.3 seconds, which is an impressive number. CJ = D0OR-E, TJ = C8VE, C9VE, D0VE. Engine Basics. Introduced in 1968, the 428 Cobra . From there, it's another small step up to the Super Cobra Jet package in your Torino, which is introduced when you order the 3.91 ($155) or 4.30 ($206) axle ratio.The CJ's two-bolt mains give way to four-bolt mains, the pistons are forged aluminum instead of cast, a 780 CFM Holley carb sits atop a bespoke intake manifold, there's an oil cooler hanging off the front of the radiator support, and . Reply. Basically, a 428 is just a stroked 390, and tuned for massive torque over horsepower. After owning several 428's, and a few 429's, it seems to me that the 429's have a LOT more low-end torque, but the 429's just don't maintain power at higher RPMs as readily as the 428s. Year: 1969 "Q" Code (Cobra Jet) bbl: 4: Cylinders: 8: Power (hp) 335 hp @ 5,400 RPM: Torque (lb/ft) 440 hp @ 3,400 RPM: Compression: 428 Cobra Jet Engine Detailing, Part 3 The last two issues, we brought you Part 1 and Part 2 of Marcus Anghel's exhaustive deep dive into how to detail a 428 Cobra Jet engine to concours level. A 428 behind the block will have a welded A , a cj and scj will have a C shaped weld on back . I was wondering if anyone knows the difference between a regular 428 block and a 428 Cobra Jet block. V-8 and the refined, velvet hammer Ford 428-cu.in. This engine makes gobs of horsepower at the sacrifice of torque . Although the original Ford Mustang was a hit with younger crowds from its inception . Typical Cobra Jet Crankshaft. the 429 thunder jet is the base 429 4v. 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. "CS: The GT500s had a 428, but there wasn't any less horsepower. 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. The 332-352-360-390-406 428 series of Ford Big Blocks are all essentially the same…They just juggled bore and stroke dimensions…The 427 racing engine is also of this family but has a unique short stroke-big bore design with a completely different crankshaft and heads…Getting 700 HP out of a 428 is largely a dream, the basic design will simply not support it…Cobra Jet and SCJ were . 358.9. So the crankshafts are different between the two, and so are the pistons (same bore size, but wrist pin location is different between the two), the rods are the same. The scoop mated to a special air cleaner with a vacuum-actuated butterfly valve that funneled air directly . since there were fewer cobra jet cars made they bring more money. Ford warmed up the 428 with nothing more than off-the-shelf parts to achieve the legendary 428 Cobra Jet of 1968. 390 heads will have 6090 h stamped between the spark plugs , a 428 will have 6090 -N between spark plugs showing it is a cj . After some break-in miles, we'd . #2. This '69 Mustang features the legendary 428 cubic-inch Cobra Jet V8 engine option. Not very substantial for racing. Differences lie mostly in the main bearing webbing, which is something you must be mindful of, depending upon how you . This version was just a 2-bolt 429 with passenger car heads, and was rated at 360 horses. . . 428? Automotive historians have extensively documented the differences between the violent and brutal Ford 427-cu.in. And according to Shel there was not a "nut or bolt" difference between them and the non-KR GT500's. "MM: The regular GT500 has a 428 Police Interceptor, and the KR has a Cobra Jet 428 with more horsepower. The 428 Cobra Jet powered some of the fastest Ford Muscle Cars from 1968-1970 over nine different Ford and Mercury models. The 429? Another clue this engine was underrated was the smaller 390 V8 with a four-barrel carb was also rated at 335 HP. The Tasca-tuned combination worked so well that Ford pushed the engine into production Mustangs as the 428 Cobra Jet.

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