Editing Ford FE engine (section)

=====428 Cobra Jet=====
[[File:1969 Ford Mustang Cobra Jet 428 (15687554723).jpg|thumb|428&nbsp;CJ with [[shaker scoop]] (1969 Mustang)]]

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<ref>{{cite web |url=https://www.428cobrajet.org/id-heads |title=Cylinder Heads {{!}} Mustang 428 Cobra Jet Registry}}</ref> 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. A Holman and Moody specially prepared "stripper", which carried no sound deadener, undercoating, or any optional factory equipment, was used as the introductory press car in 1968.<ref>{{cite web |url=http://www.mustangandfords.com/featured-vehicles/mdmp-0707-fastest-mustang-tests |title=Fastest Classic Mustang Tests - Who Would Be King?|date=July 2007 }}</ref>

The 428 Cobra-Jet had a compression ratio of 10.8:1 and was rated {{cvt|335|bhp|kW|0}} at 5200&nbsp;rpm and {{cvt|440|lbft|Nm|0}} at 3400&nbsp;rpm. Historical road test data on actual production 428 CJ cars suggest peak output in the neighborhood of 275 SAE Net ("as installed") HP, using published trap speed and "as tested" weights, and Hale's trap speed formula.<ref>{{cite web |url=https://www.motortrend.com/how-to/testing-4-2-8how-much-horsepower-ford-428-cobra-jet-really-make/ |title=Testing 4-2-8…How Much Horsepower Does the Ford 428 Cobra Jet Really Make?|date=21 November 2016 }}</ref> Period road tests revealed quarter mile performance in the low 14-second to very high 13-second range, with trap speeds around {{cvt|101|to|103|mph}}:<ref>{{cite magazine |url=http://wildaboutcarsonline.com/members/AardvarkPublisherAttachments/9990494729848/1969-02_SS_1969_Mustang_Mach_1_428_CJ_Test_1-4.pdf |title=Mach I Mustang CJ428 |author=McGonegal, Roland |date=February 1969 |magazine=Super Stock |pages=21–23;72}}</ref>

The 428 Cobra Jet engine (modified to the NHRA [[Stock (drag racing class)|Stock]] and [[SuperStock (drag racing class)|Super Stock]] technical specifications) made its drag racing debut at [[1968 NHRA Winternationals]], held from February 2–4, 1968, at the [[Auto Club Raceway at Pomona|Auto Club Raceway]] at [[Los Angeles County Fairgrounds]], in [[Pomona, California]]. Ford Motor Company sponsored five drivers ([[Gas Ronda]], [[Jerry Harvey (drag racer)|Jerry Harvey]], [[Hubert Platt]], [[Don Nicholson|"Dyno Don" Nicholson]], Kenneth McLellan, and [[Al Joniec]]) to race six 428 CJ-equipped Mustangs. They raced in classes C Stock Automatic (C/SA, {{cvt|9|to|9.49|lb/hp|kg/kW}}), based on advertised horsepower) and Super Stock E (SS/E or SS/EA, manual or automatic transmission, respectively, at {{cvt|8.70|to|9.47|lb/hp|kg/kW}}, based on factored horsepower). The engine lived up to expectations as four of the cars made it to their respective class finals. Al Joniec won both his class (defeating Hubert Platt in an all-CJ final) and the overall Super Stock Eliminator title (defeating Dave Wren who ‘red lighted’ in his faster 426 Race Hemi Plymouth).<ref>{{cite web|url=http://www.428cobrajet.org/pomona.html |title=428 CJ Mustangs at the 1968 NHRA Winternationals &#124; Mustang 428 Cobra Jet Registry |publisher=428cobrajet.org |access-date=2014-02-28}}</ref>