Hi i have a lt1 with some ignition problems but i plain on spraying the thing when i can get its ign problems fixed. So i am thinking mabey the problem might be in my cheap bosh plugs so i want to switch them but am unsure if i go with the one step colder NGK plugs if that will cause any more porblems now or later down the road b/c i might not spray for another 5-6k miles. Thanks guys.

 

for what i have heard they will rob like 1 hp. i have had them on for long periods of time w/o spraying and they are just fine no problems

 

I killed a set of of plugs in my LSX pick up and all I had lying around was some TR-6s with about 20 passes on them. That was 12-15,000 miles ago, truck runs like a champ. You may notice a slightly rougher idle but that should be it.

 

I have seen some cars run alittle finiky at first. However all my street cars have always had TR6s in them for daily driving.
Dave

 

I’ve been driving around on TR-6's here and have had no noticeable problems. The plugs look good every time I replace them.

 

yup idle is a little more shaky, but its nothing like a cam