what spark plugs are best for a 302

[scrapper]

Its a 1975 engine with trucks heads, headers, carb, a cam and flat top pistons, hei disributor. what would be a good sparkplug?

 

[scrapper]

so far i have found autolite 24 with a 54 gap

 

[lil_Blue_Ford]

Motorcraft or Autolite is usually what’s recommended for the older Fords. Double platinum is considered the best. The Iridums aren’t worth the price. Single platinum is all the benefits of platinum with all the downside of copper (better spark, faster wear)

 

[scrapper]

Motorcraft or Autolite is usually what’s recommended for the older Fords. Double platinum is considered the best. The Iridums aren’t worth the price. Single platinum is all the benefits of platinum with all the downside of copper (better spark, faster wear)

would 24 be correct? I found autolite ar24 im guessing they should work?

 

[lil_Blue_Ford]

Standard for a stock truck back then was a 26, APP26 for Autolite double platinum. Don’t remember how the heat ranges run with the numbers though, so a 24 may be a hotter or colder plug that may work better/worse with your application. Sorry I can’t be of more help.

 

[scrapper]

oreillys says ap 25 Im just not sure because everything is different from stock. I put in 94 f150 302 engine because that is what the heads come off of.

 

[scrapper]

Standard for a stock truck back then was a 26, APP26 for Autolite double platinum. Don’t remember how the heat ranges run with the numbers though, so a 24 may be a hotter or colder plug that may work better/worse with your application. Sorry I can’t be of more help.

Thanks for the help it should work with a 26. Just thought i would ask to make sure.

 

[lil_Blue_Ford]

Thanks for the help it should work with a 26. Just thought i would ask to make sure.

I went by the older block…

 

[scrapper]

i meant ap25 is what oreillys said. its around an 8 for the heat but some were a lot hotter