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Old Dec 27, 2008 | 09:31 AM
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Default Spark Plug
What's the best spark plug for the C5?

Also,are they all easy to get to?

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Old Dec 27, 2008 | 09:36 AM
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Many opinions on this.
Copper plugs are best . Many like the NGK TR 55. If you don't mind changing every 20K miles.
Otherwise go with the stock AC/Delco Irridiums.
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Old Dec 27, 2008 | 10:01 AM
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The consensus seems to be they are all pretty similar -- performance wise. I'm happy with the NGK Iridiums. It's a pretty easy driveway/garage job.
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Old Dec 27, 2008 | 10:44 AM
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What about the 4 prong ones that you don't have to gap?
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Old Dec 27, 2008 | 10:46 AM
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AC Delco Iridium plugs and GM performance wires are a great combo.

Chuck
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Old Dec 27, 2008 | 11:03 AM
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Originally Posted by csexton
AC Delco Iridium plugs and GM performance wires are a great combo.

Chuck
Good choice!
Gene can hook you up for 100 or so for plugs and wires.
Easy? 7 can be a hassle. Just get new wires, you need them and will probably FUBAR at least 1 getting them off. They tend to be stubborn. 2 hints: wear gloves(!!!) and be liberal with the dilectric grease on the new wires.
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Old Dec 27, 2008 | 11:07 AM
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I went with the AC Iridiums when I changed plugs. They are very good and got them at a great price from Gene at gmpartshouse.com.

The NGK TR 55 plugs are good also.
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Old Dec 27, 2008 | 01:19 PM
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NGK TR55 are very good, had several differnent plugs and it seems the NGK TR55 has worked the best for me. IM using NGK TR6 for nitrous
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Old Dec 27, 2008 | 01:27 PM
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Originally Posted by csexton
AC Delco Iridium plugs and GM performance wires are a great combo.

Chuck
Yup - That's what I've got.
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Old Dec 27, 2008 | 01:50 PM
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AC delco on the plugs and GM performance on the wires.
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Old Dec 28, 2008 | 07:18 AM
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Originally Posted by bencini231
AC delco on the plugs and GM performance on the wires.
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Old Dec 28, 2008 | 11:55 AM
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Originally Posted by bencini231
AC delco on the plugs and GM performance on the wires.


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