Spark Plugs - LTR6AI-13 vs LTR6BI-13 vs LTR6IX-11 vs SP-519 (CYFS-12-Y)

[Burgo]

So whats the correct gap for 2017 NA, 0.050"?
What would be the consequence of running a 1.1mm (0.043") in an NA 2017 5.0L

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[18 Smoke]

So whats the correct gap for 2017 NA, 0.050"?
What would be the consequence of running a 1.1mm (0.043") in an NA 2017 5.0L

Probably no consequence, but NGK recommends .052. I ran them at .050 in my NA 18
See post #9

 

[Burgo]

From what I have found, difference between the LTR6AI-13 and the LTR6BI-13 is:
A - 10.9 tapered seat type (what ever that means)
B - 11.2 tapered seat type (what ever that means)

 

[blue350gt]

does anyone know, for a PP1 do you have to remove the strut brace to get to the spark plugs?

Thanks in advance

 

[GR11M]

On the 2016 GT is there a bhp limit for NA where the colder plugs would be better ?

 

[kluke15]

does anyone know, for a PP1 do you have to remove the strut brace to get to the spark plugs?

Thanks in advance

at least on the 15-17s you dont have to remove the strut brace but gives you more room forsure. id imagine its the same on 18+

 

[Rapid Red]

From what I have found, difference between the LTR6AI-13 and the LTR6BI-13 is:
A - 10.9 tapered seat type (what ever that means)
B - 11.2 tapered seat type (what ever that means)

No crush ring on the base, taper seals the plug to the head.

 

[Rapid Red]

FWIW

This is a wicked plug, just switched to the rapid fire Delco in another car. Noticeable performance bump, not wheel standing, but there crisp idle and throttle reaponce.


When the Mustang is ready

ACDelco 88879892 - ACDelco RAPIDFIRE Performance Platinum Spark Plugs

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