ENGINE: Utica Engine Numbers for 55th-56th Series V8

Posted by BH On 2009/5/20 15:04:31

Packard engines (and Ultramatic transmissions) built at the Utica plant had a unique serial number applied - independent of the vehicle serial number. This serial number also included an identifying prefix.

For an explanation of Utica engine number prefixes for 56th Series, see:https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=451&forum=3&post_id=2795#forumpost2795

A subsequent post in that same thread reveals three prefixes used for 55th Series Packards:https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=451&forum=3&post_id=2810#forumpost2810

Images showing both Utica engine number stamping locations can be found here:https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?topic_id=1684&forum=3&post_id=15140#forumpost15140