Spark Plugs

[87BUICKGNTURBO]

What's the best spark plug to run in my 87 Buick Grand National?

Thanks,
Kevin

 

[TLIMITED]

Depends on mods.

 

[87BUICKGNTURBO]

No mods to my engine. Its original.

 

[TLIMITED]

No mods to my engine. Its original.

AC R43TS or Autolite 24's

 

[87BUICKGNTURBO]

AC R43TS or Autolite 24's

Thanks for the info!

 

[Hector Hernandez]

And with mods what can I run

 

[TLIMITED]

And with mods what can I run

Normally when you run larger turbo-more boost or break into the 11's a AC R42TS OR Autolite 23's seems to be a good choice.Gap should be .032" to .035".