Flowsheet from the 6.0L heads. Completed at Indy Cylinder Heads (www.indyheads.com) this is on a stock mildly ported 6.0L head that will be bolted on soon.

Futral Motorsports Custom Grind Turbo Cam

Futral Motorsports Custom Grind Turbo Camshaft

Cometic Head Gaskets for the LS1 Application. These are .051" thick to help with lowering the compression ratio.

Ferrea Intake & Exhaust Valves, ARP Head Studs, Comp Cams Titanium Retainers and Springs and Katech Rod Bolts.

Katech Rod Bolts $165-ish from Lingenfelter Performance. No real place to put this picture so it will remain with the head parts. No internal work being done to rotating assembly other than installation of these bolts to the rods.

Hard to believe this little bolt is worth $8.75 each.. Even harder to believe that I needed 16 of them !!! Ordered from Lingenfelter Performance

Ferrea Valve, Comp Cam spring and Titanium Retainer.. Missing is the lock.

6.0L equivalent of LS6 heads. They have same chamber design as LS6 heads but are larger that offer a lowered compression ratio when used on stock LS1 rotating assembly.
GM Part # 12562317

Stock compression ratio on an LS1 engine is a somewhat boost unfriendly 10.1:1.
These heads lower compression ratio to appoximate 9.1:1.

These heads will be O-ringed for better boost compliance and possibly ported/polished. These heads weigh a COMBINED shipping weight of 48#.

Stock 6.0L heads prior to porting.

Minor porting done thanks to Eric at www.turbotime.us
Flow numbers coming.

Minor porting done thanks to Eric at www.turbotime.us
Flow numbers coming.