those are the ls1 recommended plug, that what i got in! yer the LS1 has ali heads, but so does the LT1 and so have most modern cars since the 1990s at the latest, lol.

check here: [http://www.texas-speed.com/shop/cate...ID=1&catid=11]

get the normal ones, you can get iridiums but for extra cash they are no different

well i cleaned all mine painstakingly with a rag and some WD40 spray and another slightly damp cloth to get the loose dirt off, WD40 for the grease. I would say never spray or jet was an engine bay cause the water gets everywhere.

 

if u got the money might want to look into new tube lower a arms. better ball joints.
these run about 380 for the pair. probly find em elsewhere cheeper.

http://www.spohn.net/shop/1998-2002-...er-A-Arms.html

 

If you take the coil packs off it's easier to get to the plugs on the passenger rear.

I used iridium denso plugs. That's what came in my car. I was not impressed with the tr55 tr6 plugs.