Spark plug temp range question...

[GTA_V6_Mustang]

Well I want to experiment with something and would like to use an NGK spark plug 1 stage colder. I did a search but could only find spark plug ranges for the GT40 heads. I have E7's (Stock) Thank you for your help.

 

[HISSIN50]

I dunno what the colder NGK plug is but if you use Autolites, a 24 is one step colder than stock (I run those myself).

 

[GTA_V6_Mustang]

I dunno what the colder NGK plug is but if you use Autolites, a 24 is one step colder than stock (I run those myself).

Well if I cant find a colder NGK i guess I will try the autolites, though I just naturally prefer the NGK. I know how the autolites work as far as the number in relation to the temp, lower number from stock is colder and higher is hotter just dont know how it works for NGK, I believe it might go backwards doesnt it?

 

[toyman]

Well if I cant find a colder NGK i guess I will try the autolites, though I just naturally prefer the NGK. I know how the autolites work as far as the number in relation to the temp, lower number from stock is colder and higher is hotter just dont know how it works for NGK, I believe it might go backwards doesnt it?

Just the opposite for NGK. Higher is colder.

 

[GTA_V6_Mustang]

Just the opposite for NGK. Higher is colder.

Yeah thats what I though, So anyone know what that higher number might be?

 

[FlyBy763]

Yeah thats what I though, So anyone know what that higher number might be?

2771 is the stock number
UR5 is the part number