Proper plug gap?

[nomods]

I noticed in buick manual that came with car that if your regal has turbo 3.8 that the plug gap should be .045.I have always run .035.I kept the original plugs and checked them.....sure enough .045. ACR44TS

 

[salvageV6]

Service manual says .035" that may be a typo in the owners manual, the .060" for the other engines is backed up by the service manual.

 

[william B.]

.024 works

 

[crisp76]

I run the R43TS with a .035 Gap. My stockers R44TS also had a .035 and did real well.