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.



Hmmm, the APP764's that I just bought are only partially threaded, 5 threads to be exact. That was the config of the original non-plated, sgl plat Motorcraft plugs that came out of the engine. Maybe you got the descriptions reversed?

Kurt

'95 Contour SE, MTX, Champagne '03 EB Expedition, Med Wedgewood Blue