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slow4.8 10-29-2003 05:07 PM
spark plugs
 
what plug is better for performance? platinum or copper?

GREGGO 10-29-2003 05:16 PM
Copper. Can't go wrong with NGK for quality and price.
TR5, TR55, TR6 all work well.

slow4.8 10-29-2003 05:30 PM
Does the TR5, TR55, TR6 signify the heat ranges or what?

slow4.8 10-29-2003 05:32 PM
Also I'm looking for a little more performance than what I have now and I am trying to utilize the gain with what I have. Does anyone have any suggestions? Thanks again for any info.

2ksleeper 10-30-2003 06:42 AM
Originally Posted by slow4.8
Also I'm looking for a little more performance than what I have now and I am trying to utilize the gain with what I have. Does anyone have any suggestions? Thanks again for any info.
The best two performing plugs that I have run in my truck is denso iridium & acdelco/denso platinum. I would be running the acdelco/denso platinum (#41-974) in my truck but they are too hot of plug for my application so I am running the denso iridium it20 which are colder than stock. Both of the plugs gave my truck more pep. I have ran acdelco platinum 41-952 & 932, ngk tr55 & tr6's, and also the bosche +4's. The bosche +4's ran the next best. The only down side to the denso iridium plugs is they costed $11 a pop were as the acdelco/denso jap plug & bosche +4 plug cost $6 a pop.

L82gofast 10-30-2003 06:55 AM
Originally Posted by 2ksleeper
The best two performing plugs that I have run in my truck is denso iridium & acdelco/denso platinum. I would be running the acdelco/denso platinum (#41-974) in my truck but they are too hot of plug for my application so I am running the denso iridium it20 which are colder than stock. Both of the plugs gave my truck more pep. I have ran acdelco platinum 41-952 & 932, ngk tr55 & tr6's, and also the bosche +4's. The bosche +4's ran the next best. The only down side to the denso iridium plugs is they costed $11 a pop were as the acdelco/denso jap plug & bosche +4 plug cost $6 a pop.
NGK has iridiums now for $5 a plug. TR55ix, Orielly's sells them. I could tell the differance after installing them. good plug.


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