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The Ford Mustang Mach 1 is a combination performance and appearance package offered as an option for the Ford Mustang in August 1968 for the 1969 model year.. Over the following years, the package was available with various engines that became more modest as emissions controls, unleaded gas, fleet mileage quotas, and higher gasoline prices undercut the "horsepower wars" that were the origin of ...
The 428 Cobra Jet was a performance version of the 428 FE. Launched in April 1968, it was built on a regular production line using a variety of cylinder heads [30] combined with a 735 CFM Holley four-barrel carburetor. The Cobra Jet used heavier connecting rods with a 13/32 rod bolt and a nodular iron crankshaft casting #1UB.
Although 1969 continued with many of the same basic V8 engines available on 1968 models, notably a revised 302 cu in (4.9 L) small block engine with 220 hp (164 kW; 223 PS), the 390 cu in (6.4 L) FE with 320 hp (239 kW; 324 PS) and the recently launched 428 cu in (7.0 L) Cobra Jet engine (with or without Ram-Air) with an advertised 335 hp (250 ...
The Mustang's engine compartment was not wide enough to accommodate the massive Boss 429 engine, so Ford contracted with Kar Kraft of Dearborn, Michigan, to modify 4-speed Cobra Jet Mustangs to accept it. Kar Kraft was a Ford exclusive experimental facility that functioned as Vehicle Engineering for Ford's Special Vehicles.
Introduced on April 1, 1968, the 428 cu in (7.0 L)-4V CJ (Cobra-Jet) FE engine became available as an engine option, but due to its mid-year introduction these engines are very rare. The 428-4V Cobra-Jet was the most potent engine available for 1968, and is general believed to be under-rated at 335 hp (250 kW). [5]
Ford developed two high-performance street versions of the 429 between 1969 and 1971, the Cobra Jet and Super Cobra Jet. The Cobra Jet (429CJ) was fitted with a Rochester Quadrajet 715 cu ft/min (20.2 m 3 /min) Spreadbore 4-bbl carburetor, a larger camshaft; a special set of cylinder heads (DOOE-R) 73.5 CC, combustion chamber and canted valve ...
1969 Mercury Cyclone Cobra Jet. Mercury also added a new model to the Cyclone line: the Cobra Jet (CJ). The Cobra Jet's engine was a 428 cu in (7,014 cc) which generated 335 hp (250 kW). The engine had a Ram Air option, a 735 CFM Holley four-barrel carburetor [3] although the option showed no quoted difference in horsepower rating.
The second-generation Cougar underwent a revision of the powertrain offerings. For 1971, a 240 hp 351 Cleveland two-barrel V8 was the standard engine with a 351C four-barrel V8 as an option. [29] The Boss 302 and Boss 429 were discontinued, with both Boss engines and the 428 Cobra Jet replaced by a 370 hp 429 Cobra Jet V8 (with or without Ram Air).