Motorcrqaft TT10 alternatives?

[JayJay]

I've been using Motorcraft TT10 spark plugs. Apparently those are no longer available. I've seen the Autolite 3076 suggested as an alternate, anyone have any experience/comments? My driving is mostly open roads at moderate speeds (touring) with a bit of surface streets to get to the open roads. The car fully warms up.

 

[Oldgearz]

I run the Autolite 3076 in my Coupe with a Mitchell ID and a 5.5:1 HC head. Car has great power and runs very smoothly with these plugs. Have tried others, but not with as good results.

 

[dave in australia]

Champion w20, w18 or w16, depending on heat range required. I run the w20's with no issues, Snyder 5.5 head and a B cam.

 

[henry's 31]

Champion W18 (518 now) work very well in all my Model A's.