tr6 gap out of the box?
Spark plugs should never be put in with a "outta the box" gap. I would always check before install. With a truck the has mild boost such as yours say 10-14 psi a .037"-.035" gap would be fine. Those running 15+ should use a tight .035" and people running nitrous or excessive boost such as a Kenne bell should be lower around .032" We use NGK TR6's here for most all of our applications.
Hope this helps,
JimIII@JDM
Hope this helps,
JimIII@JDM


