Topic: Time for plug change question (Done)

[oHIobellboy]

Well it took me about 2.5 hrs to do including cleaning the MAF. The numbers 1, 5, & 8 were a pain in the !#@ to get to on my 04. No busted knuckles or cuts...   No way would I put headers on if they made the plugs any harder to get to. The heat shields also do not fit the MSD 8.5 mm wires well so I left them off. Engine definitely feels smoother.

I haven't had heat shields on mine for about over 65k miles now. I didn't think to put them on the new wires at 90k.

[russiankid]

For some reason I was thinking it was the other way around, warm to keep them from possibly stripping the threads.

I've talked to a few GM techs and I've been told that keeping the heads cold is the best way.