Old 302 spark plugs?

[84coupe306]

Does anyone know what years ford used the big spark plugs in the 302?My car has a older engine but I aint sure what year but it takes the huge spark plugs!:SNSign:

Thanks,
-Nathan-

 

[Strype]

I bet if you posted that question in Classic Mustangs you'd get a butt load of answers. Try there

 

[stang8urimport]

The spark plug usually has the part number right on it. If not, attempt to bring the plug to the local parts store to match it up (good luck on that... I'd go to NAPA)

 

[bobcatv8]

I think 1976 was the last year of the 18mm {big} spark plug.