Thanks for visiting!


We have been serving the Mustang Hobby for over 30 years by providing quality parts with great service and reasonable prices. Check out our web site.

We started this Blog to share pictures, show new parts, and just talk about 64 1/2-73 Mustangs. We love to feature Customer Cars also. If you would like to see your Classic Mustang right here on our Blog, send us an email by clicking here to find out how!!

Friday, December 9, 2011

Just the Details...289 Engine Date Codes

The Casting Date on the 289 Engine is located under the area that is hidden by the starter.  The date on this 289 HiPo is 5A27.  This decodes as January 27, 1965.
www.VirginiaClassicMustang.com


While detailing our 1965 GT350 Shelby Mustang, I took a few pictures showing some engine and engine component date codes on the 289 High Performance engine.  These would apply to any 289 Ford and many other Ford engines.


The Engine Assembly Date is stamped on the pad in front of the LH cylinder head.  This date would always be later than the casting date of the engine block.  The date on this 289 HiPo appears to be 5B09.  This one did not get stamped straight.  This decodes as February 9, 1965.
www.VirginiaClassicMustang.com
Cylinder Heads also have casting dates.  These typically precede the engine casting date.  The 4M9 decodes as December 9, 1964.
www.VirginiaClassicMustang.com


In case you wish to compare the dates to cars built around a similar time, I will mention that this is a San Jose produced Mustang with a scheduled build date of around March 25th of 1965.  The Shelby number is SFM5S162.


Flywheels also have casting dates.  The 5A4 decodes as January 4, 1965.  This is the 289 HiPo Flywheel will the orange identifying paint mark.
www.VirginiaClassicMustang.com

The Harmonic Balancers are simply dated with a month letter and year number.  This one is A5 representing January 1965.
www.VirginiaClassicMustang.com




Post a Comment