I have a 2009 ly6 and I'm looking for any info on the factory rotating assembly. I was told that the crank is forged. But I can't find anything on it. Lookin to see what the pistons, connecting rods and crank are. All I can find is bore and stroke and cr.

 

Its not a forged steel crank, its nodular iron, the rods are Powdered Metal, and pistons are hypereutectic(high silicon) cast aluminum.

peace
Hog