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History of the 68 Ford mustang 428 (KR-8) Cobra jet's Ask any knowledgeable Blue Oval enthusiast to name the quickest pure-production Mustang of the muscle car era, and most will say the 1968 Ford Mustang 428 Cobra Jet. Big-block Camaros and Firebirds, and even 340-cid Darts and Barracudas, were kicking Mustang's tail on the street. Ford countered by making its 427-cid V-8 a Mustang option in early '68 models. It was a detuned 390-horsepower version of the legendary near race-ready 427, however, and its slim availability and $755 cost were downers. Enter the 1968 Cobra Jet Mustang. It's introduction was essentially the reason for the 1968 Drag Team's existence. In 1967 and early 1968, aside from the pricey GT 500, the top Mustang one could purchase was the 320-horse 390 GT. The Mustang was redesigned for the 1967 model year to accommodate the big FE engine, previously the top engine was the 289 Hipo. The first big block pony car was indeed a great machine, but compared to the competition, it was relatively underpowered. This fact was becoming more and more evident on the street, the 390 just couldn't quite hang with it's rivals. Ford's brass didn't seem to be too concerned with addressing this problem until they were presented a solution: the Mustang KR-8. KR meant "King of the Road", and the 8 referred to the 428 engine. Amazingly, the KR-8 wasn't dreamed up in Ford's engineering department, but in a Ford dealership's service department. This wasn't just any dealer, this was Tasca Ford, the legendary Ford store in Rhode Island owned by Bob Tasca. Tasca was at the forefront of Ford racing in the 1960's, operating a top-running drag team of their own. Tasca competed with Galaxies, Thunderbolts, A/FX Mustangs, and early Funny Cars, all piloted by the late great Bill Lawton. The KR-8 can be considered the very first Cobra Jet Mustang, even though the actual CJ name came along later. Tasca's shop took a Mustang with an exploded 390 and replaced it with a 428 PI short block equipped with 427 Low Riser heads and a 735 Holley carb. Even after reviewing Tasca's creation, Ford still wasn't totally convinced they should produce the car. Bob Tasca was the firecracker, but Hot Rod magazine readers lit the fuse. Surprisingly, it took an article published in the November 1967 issue of Hot Rod to finally seal the deal. The article prompted readers to mail their opinions to Henry Ford II himself, which they did. The onslaught of letters asking him to build the car was enough for the Deuce. He gave his blessing, and approved Tasca'a creation for production. The KR-8 name was dropped, replaced with the new "Cobra Jet" moniker. Thanks to the basically off-the-shelf content of the engine package, the Cobra Jet program was fast tracked in late 1967. The next step for the Cobra Jets would a surprise visit to Pomona.