2004 5.3 piston in a 2000 block
 

I have a 2000 5.3 stock bore and everything. I found some 2004 5.3 pistons that the guy say they are from a aluminum 5.3. He also told me I could not use my 2000 rod with them. I thought that it was because I needed floating wrist pin rod but posted in the AD form where I was informed that 5.3 do not come with floating wrist pins.

So I guess the question is can I use the piston for the 2004 or not? If not why?

Thanks
Todd

Are they flat-top pistons?
As far as I know the L33 was first released in 2005. The pistons are not dished.

nope dish top pistons

They are not from the L33 then. Sound like standard pistons.

So they should work?

I guess I will give them a try. Thanks for the help.