Ngk spark plugs

[TC65]

Does anyone know if NGK makes racing spark plugs for Ford 2300 heads? I checked their website and could not find any. We have been running their plugs but they are listed as standard plugs.


Thanks for any help
TC65

[Foghorn]

You could try an NGK Iridium IX . NGK calls them "Extreme Performance".

[trone12x]

Dont know about ngk. But autolite has a dirert cross for the RS9YC in a racing plug. Its the AR103

[csj1]

I think the ones we are using are the R5724-x. I know we went to a colder plug later in the season so without pulling the plug from the car I will not know for sure.

[CRP Racing Products]

Yes the NGK plug is R5724-8

[Big E tech]

The R5724-8 is a projected tip plug.

If you have a head where the plug is close to the deck or piston, you can go with a NGK DCPR7E or NGK BR7EFS