The real cobra jet block had reinforced webbing as well as a higher nickel content, i.e. "A standard 428 will have a U1 crankshaft ballanced on the inside of the ballancer but weight added on crankshaft . Ranging from common problems info to performance modification guides, we cover everything muscle car. According to Ford themselves, independent dynos showed electric Cobra Jets making north of 1,500 wheel-horsepower. As a result, the 428 was less rev-happy but it gained a low-end torque punch that was absent in the 427. 428 Cobra Jet Standard was 2.09 inch intake and 1.66 inch exhaust valves. Known as the Thunderbolt, this Fairlane saw very limited production and was built as a factory lightweight race car. I actually have some kind of answer that I hope will help. These cars ran the quarter-mile in the mid-11-second range, quick by any standard. Introduced at the height of the high-performance wars, big-block Cobra Jets acquitted themselves well in the Mustang and in other cars. 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. When identifying a Super Cobra Jet, you cant do it by the VIN as it shares the same R and Q code designations as the Cobra Jet. 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 rotating assemblies between the Cobra Jet and Super Cobra Jets are different, and mixing them leads to balance issues. There is no word on when the next Ford Cobra Jet Mustang will be released, or even if there will be another one. For this family of motors, the SCJ actually got four-bolt mains and then there was that same 5 horsepower difference. The SCJ had beefier rods and an oil cooler. 428cj vs 460 | 460 Ford Forum The car automatically became a Super Cobra Jet. Unlike the 351, Ford based the 428 Cobra Jet and Super Cobra Jets on the FE series of engines. The 428 Police Interceptor Engine The 428 police interceptor engine could be found on both the 1967 Shelby GT500 and the 1968 GT500KR. p.s. See more Reply Save Like 1 Required fields are marked *. The back of the CJ block should have a "C" cast or welded into the back of it. Whenever a . The World's largest Register now for free! 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. Reportedly, Ford plans on getting even crazier with the electric Mustang Cobra Jet, shooting eventually for one that can hit the quarter-mile in less than 7 seconds. Ford really got it right with the 1968 428 Cobra Jet (CJ). The big reason a 428CJ makes more horsepower and torque than a PI is the superior heads. Tim K, Cobra Make, Engine: Shell Valley- smallblock grenade w/ the pin pulled. They were the be-all and end-all of rods back in the sixties, but metallurgy has far surpassed them today. The back of the CJ block should have a "C" cast or welded into the back of it. The Thunderbolt proved to be a very fast factory team drag racer--and proved again that the FE engine could be a formidable competitor. If it's to be a "driver", compression needs to be lowered to use "pump . Its not very well known, but Ford also branded another Cobra Jet from 1971-1974 the 351 Cleveland.
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