Re: Spark Plugs

Posted by Owen_Dyneto On 2011/9/7 12:16:35

The transition vehicle numbers for change from machined to cast done were 5522-4481, 5542-4597, and 5547-2596. Machined dome chambers used 7/16 reach, and cast done used 3/4 inch reach. The cylinder head casting number changed from 440689 to 440854, later also including "CD" as a suffix. Champion plugs changed from H-10 to N-8.

The Service Counselor on this topic has more information on other aspects of the changeover.