Forged, heat treated, and ground. Must be used with additional base gaskets or head kit with additional copper head gaskets.
Fits:
All G23LH, G230RC, G260rc, G290RC, G290RS
Notes:
May require modifications to the piston for proper journal clearance on the piston skirt. May also require additional base gaskets for proper squish clearance when using with a stock cylinder. LH engines may also require replacing crank bearings with RC ones.
