Used: Mast Motorsports LS3 Black Label Cylinder Heads
 
- 255cc Int Port
- 106cc Exh Port
- 69cc Combustion Chamber
- Billet Rocker Rails
- Upgraded PAC1209x Springs
 
Heads have been checked and cleaned.
Roughly 20-25 passes on them, They were used as a temporary set on our CTS-V while waiting for our heads to be reworked with new valves.
 
Price includes both heads.