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Posted

I am gonna perform the 60k on my 2500hd 6.0l this weekend and debating on ac delcos splitfires or bosch platinum 4. What do you guys recommend and have used to get good fuel econ. and power. Not looking for an amazing one or the other just good for both. Tell me what your ecommend and why.

Posted

I used +4's in my Vette and GTO (both with LS1 engines) and they were great plugs. I am currently using the NGK's (copper/nickel around $2 each) in the truck and they are pretty good, but I would say that you are going to be good to go with whatever you put in as long as you gap them correctly. Just remember that the copper/nickel NGK's won't last as long as platinums or Iridiums. I just read some results on comparisons of the different metals used and the Iridiums seemed to have the most consistent burn, spark, etc. over copper and platinum. I think it was at Spark Plugs. Some really good info there.

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