Should I run a colder spark plug?

[80LS1T]

Well I have been thinking lately that maybe I should be running a colder spark plug. I have been running on the rich side and I am wondering if its because I am not getting a complete combustion. The plugs always seem to look all carboned up. I did bump the compression up to 10.9:1 from 10.5:1 in my 93' LT1. I am also running 93 octane. I thought that with higher compression you should be running a cooler spark plug? Can someone shine some light on this for me?

 

 

Thanks,

 

Guy

[Tim240z]

If you are not getting complete combustion, then go hotter. But if you are using stock plugs and you are running rich, then you have other problems...fix the problem, not the symptom

Tim

[80LS1T]

Yeah I have also been thing that maybe Street & Performance didnt do such a great job on my computer tuning. I know that its hard to tune a car just with a piece of paper that has your mods on it but you would think that Im not the first guy to send in computer that needed tuning for an LT4 hotcam? I am thinking maybe I need to save up the money to get the stuff to do it myself. I know I have said that before but I think I really need to start considering it. I even have access to a dyno pretty much whenever I want! So I could see the results there to see if I am tuning better or worse.

 

First I am going to make a set of headers this winter. I am sick and tired of that exhaust leak. Plus it just looks stupid having one header and one stock exhaust manifold! I would think it wouldn't make the computers job any easier either having a header on one side and a manifold on the other! So much to do so little money to do it! I think I need a second job to pay for the ZX mods!

 

I just thought maybe I should be running a cooler plug because of the higher compression thats all.

 

 

Guy