Originally posted by KurtD:
Originally posted by PA 3L SVT:
You can go with APP764 (full threaded like AWSF Motorcraft) or APP104 (partial thread like AGSF Motorcraft). The taper seat sets the plug height so the thread length makes no difference.




Maybe you got the descriptions reversed?



He did.

The AWSF style plugs (APP764) have the "air gap" instead of being fully threaded


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.