Hey just wondering what everyone is running for spark plugs and what you guys recomend for my application. I have a whipple charged 4.8 with 98 LS1 heads and a LS1 cam. Any help would be great.
Sam

 

I'm sure someone else will chime in on this, but I wanna say that you should get the NGK TR6's since they're a little colder plug

 

And gapped tighter at .035 or maybe even .030.

 

10-4 gowith the NGK TR6

 

I was about to ask the same. Should I run the same? I am not running forced induction, that should change it up a little.

 

NGK TR55 for N/A TR6 for F/I or NOS

 

You realize that under regular service your stock plugs are good for 100,000 miles. Scheduled maintenance does not require a plug change till 100K and most people who change them at that mileage say that they still look good. So unless you have a power adder I would not worry about changing your plugs till they are due or you have a reason to like a miss of some sort.

My truck came with NGK PZTR5A15 long life plug and I put in the NGK TR6 v power when I added the STS turbo. The NGK TR6 and NGK TR55 are copper core plugs and should be changed more frequently than the stock plugs at say 25000 mile intervals. If you want high mileage plugs then use the Irridium version of the same plugs. If you check you will find that NGK makes the equivalent plugs in 2 or 3 different series and the life expectancy of the plugs can vary drastically.

 

Well, for one I was curious. Secondly, would the addition of the TR55 plugs, would there be any kind of improvement? I would like to know that the truck is running in the fittest form that it can, if if I could not feel. Besides, its something else to mess with.......j/k.

Thanks

 

I agree, go with NGK. The Tr6 should work best.

 

Thanks for all the help. You guys are great.
Sam