I had the turbo manifold off last night to fix all the exhaust leaks that I have and I think I bumped one because it seems like it was missing just driving it around so I bought some new acdelco irridium plugs but it seems like you are supposed to use a colder spark plug I figured I would get some advice before I threw them in!

 

A majority of the members around here and LS1Tech run NGK #4177 TR6 plugs. I've been running them at the pre-gapped .030" and have almost 30k them and they look fine.

Rick

 

can I use the acdelco irridium plugs?

 

TR6 is the majority result in all of the Spark Plug threads in the F/I section

 

I noticed that summit says that they have a heat rating of 6 is that a colder spark plug?

 

Tr6 here too

 

colder, which is why everyone runs them. that and the price.

 

http://www.ngksparkplugs.com/tech_su...2.asp?mode=nml

 

whats with all the exhaust leaks?

 

Thanks for the skinney guys now I am looking at spark plug wires I am thinking of running the MSD's, what is your thought's?