[scottj]

Originally Posted by Don

The specs for the 2006 Z06 Corvette 7.0 litre, 427 CI engine indicate the pistons are cast aluminum:

http://www.corvettemuseum.com/specs/2006/LS7.shtml

The 505 HP is at 6,200 RPM

but... what does it tell you when Chevy builds 50 "performance" LS7s for a special project and the only difference between the production engine and the "performance" engine is that the performance engine has forged pistons.