colder plugs-part number?

[blckstng96]

anyone know what the part number is for a set of 1 step colder plugs for an 88 5.0,prob just some old autolites.

 

[jd-hart]

For Ford Motorcraft plugs they will have a number in the spark plug item number. Say "42" and one heat range colder would be "32" and one hotter would be "52".

I would run Motorcraft plugs....just me

 

[HISSIN50]

If you have stock heads, Autolite 24's are one range colder than stock.

 

[blckstng96]

i do have stock heads,thought autolite 24s were factory?

 

[Nova]

25's were factory. 24s are a step colder.

 

[blckstng96]

got ya,thanks

 

[86foureye]

i run autolite 23 witch are two steps colder. are you using any power adder? if you are 100 or more use two steps colder

 

[blckstng96]

nah,no power adder but the car is detonating up top so i figured maybe take the plug a step colder but it also may be a fuel issue bc the carb.it may be leaning out up top causing it to heat up and detonate.gunna rebuild the carb first and see what happens.

 

[MOC]

Autolite plugs (now say DESIGNED IN U.S.A.,MADE IN CHINA.) having a dislike for that country ,I would say Motorcraft plugs ,and just so you no ! The box's just started to display this .

 

[Mustang5L5]

Motorcraft > Autolite.


They used to be the same, now they are really not.