Do 2002 LS1's have black coated pistons??
#2
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
i think this is a moly coating on the skirt your talking about right?
i think its just z06 specific stuff, not 100 percent sure on that tho.
steve frank
i think its just z06 specific stuff, not 100 percent sure on that tho.
steve frank
#3
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
i think this is a moly coating on the skirt your talking about right?
i think its just z06 specific stuff, not 100 percent sure on that tho.
steve frank
i think its just z06 specific stuff, not 100 percent sure on that tho.
steve frank
#4
TECH Addict
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
In late 2001 Ls1 andLs6 got new pistons with polymer anti friction coating, and tighter piston to bore clearance to quiet cold piston knock. This is accurate info from GM. This carried over to 2002 also. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
<small>[ March 28, 2002, 06:14 PM: Message edited by: LS1derfull ]</small>
<small>[ March 28, 2002, 06:14 PM: Message edited by: LS1derfull ]</small>
#5
![Default](https://ls1tech.com/forums/images/icons/icon1.gif)
Here is a link to the 2002 Z06 information. On the 4th page(I think) there is talk of the piston changes. As mentioned above, the change was in April of model year 2001 on ALL LS1 and LS6 engines.
Todd
http://www.c5registry.com./2k2z06/index.htm
Todd
http://www.c5registry.com./2k2z06/index.htm