Welcome to the Mustang 428 Cobra Jet Registry!

Stock 428 Cobra Jet and Super Cobra Jet Engine Specifications

Bore4.130 inches
Stroke3.984 inches
Horsepower1968: 335 brake horsepower @ 5600 RPM
1969-1970: 335 brake horsepower @ 5200 RPM
Torque1968: 445 foot-pounds @ 3400 RPM
1969-1970: 440 foot-pounds @ 3400 RPM
Compression Ratio10.6:1

Note: the search utility on this page searches the pages that make up this web site, but it doesn't search through the registry forum database. If you're looking for something posted in the registry forum you should use the registry forum search interface instead.

The Mustang 428 Cobra Jet registry project is not related to the Ford Motor Company, Inc.

Logo design by Marc Tescione. Engine photograph courtesy of Jerry Heasley.

428 Cobra Jet History, by Bill Barr

Bill Barr
My name is Bill Barr, retired from Ford Engine Engineering. Starting in the fall of 1962 I was the Dynamometer Development/Test Engineer for the 1963 Indianapolis pushrod engine and then one of the five engineers in the Indy Engine Group for the 1964 DOHC engine. The 1964 group included a supervisor, a principal engineer, five design engineers, and a Dynamometer Coordinator. The 1965 Indy Engine Group expanded by one engineer. After the 1965 race for which 50 "production" race engines were built and sold (and Jim Clark won the 1965 Indy 500 race), the Indy Race Group was disbanded and personnel were dispersed to other engine engineering projects.

Greylisting and Blocked Visitors

There are a lot of bad actors in the world who crawl web sites looking to harvest email addresses for spammers, or to inject bogus links to spam and malware sites. One of the ways I try to combat that behavior is by using a service that keeps track of known miscreants and automatically prevents them from accessing this site. The IP address of every site visitor is checked against a database, and if your address is associated with some suspicious activity you will be asked to take an extra authentication step before you'll be given access to the site. This process is called "greylisting". If you follow the directions and complete the extra step your address will be "whitelisted" and you'll be good to go.

The service provides a web interface that you can use to search for your IP address if you want to see the type of activity that's been associated with your IP address. Please keep in mind that the information you see may have nothing to do with you. It may well describe the behavior of someone else that has used the same IP address in the past.

Display Issues with Internet Explorer 8

UPDATE: I've been able to install a work-around for the page width display issue. If you still have display issues please contact me (Scott) to let me know what you're seeing. It would help if you can have a picture of your screen ready to share.

This web site is supposed to be displayed using the full width of your web browser and display terminal. It's displayed properly with the Chrome, Firefox, and Internet Explorer version 9 web browsers, but IE 8 (and maybe earlier versions) compresses the display away from the edges. That's a bug in the browser. Please upgrade to IE 9 or try another browser if the compressed display is a problem for you.


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