12711770 L76/L92 Cylinder Head Assembly, Replaces 12582713, 12629064, 12629062

- Aluminum performance head
- Higher flow than cathedral port LS heads
- Fits any LS2 or LS family engine with 4.00- bore or larger - 2.16- solid stem intake, and 1.59- solid stem exhaust valves
- .510- max valve lift with stock springs
- As-cast -rectangle port- intake ports (not compatible with LS7 intakes)
- D-shaped exhaust ports - As-cast combustion chambers
- Uses bare head P/N 12582714

Head 12582713 is assembled with the following components:
12590771 Intake valves
12582719 Exhaust valves
12589774 Valve springs
10166345 Valve locks
10166344 Valve spring retainers
12482063 Intake valve stem seals
12482062 Exhaust valve stem seals
See catalog for flow data.