Morning - I gave a quick tune up to my 2004 yesterday and gapped my new plugs at .32. I noticed today on the way into work the car seemed to be running a little off? Did I gap this plug enough or to much? I have checked all the plug wires?

Tom

the last plugs I bought myself you didnt gap at all they were already set up but they had 4 contacts as well

Which plugs did you get?

Stock AC Delco plugs are supposed to be gapped at .60 for an LS1 motor I believe.

Which plugs did you get?

Stock AC Delco plugs are supposed to be gapped at .60 for an LS1 motor I believe.

Are they really .60? I need to check my own!

havent done my vette myself yet but the last ones I bought were Bosch and they are impossible to gap with 4 electrodes

Are they really .60? I need to check my own!

I haven't done mine yet, but Googling for the gap comes up to .60 inch for stock ac delco's in an LS1 engine. Remember though, that you and I both have LS6 motors. They use the same plugs I believe, but the wider the gap the better (and I realize that there's lots of flame wars about these things, different modes of thought).

The theory goes that the closer the gap, the less hard they have to work (less spark, less gas burnt), the longer they last. The farther the gap, the more they work (more spark, more gas), the more power they produce, also the sooner you have to replace them.

I've seen different plugs listing ranges from .30 to .62. Since these corvettes each have a coilpack on each plug I just can't imagine getting much out of it.

BUT....of course this is where tuning can come in to play. Back in the bad old days of carbs and point ignitions, it was a huge advantage to play with plug gaps. I would be suprised if that were still true with the computer controls these days, but it could be fun to experiment with! Why not index the plugs? It won't make you SLOWER! :D

Great information guys thanks!

I haven't done mine yet, but Googling for the gap comes up to .60 inch for stock ac delco's in an LS1 engine. Remember though, that you and I both have LS6 motors. They use the same plugs I believe, but the wider the gap the better (and I realize that there's lots of flame wars about these things, different modes of thought).

The theory goes that the closer the gap, the less hard they have to work (less spark, less gas burnt), the longer they last. The farther the gap, the more they work (more spark, more gas), the more power they produce, also the sooner you have to replace them.

I've seen different plugs listing ranges from .30 to .62. Since these corvettes each have a coilpack on each plug I just can't imagine getting much out of it.

BUT....of course this is where tuning can come in to play. Back in the bad old days of carbs and point ignitions, it was a huge advantage to play with plug gaps. I would be suprised if that were still true with the computer controls these days, but it could be fun to experiment with! Why not index the plugs? It won't make you SLOWER! :D

ESPZ06 I was trying to see how low your car is, can you post a side shot of your Vette? thanks

JC

ESPZ06 I was trying to see how low your car is, can you post a side shot of your Vette? thanks

JC

Sure! Any excuse to show off my baby! Here's a bigger shot of my avatar:

http://www.nmia.com/~esp/newweb/pics/z06/sidelowsmall.jpg