Bare C5R Racing Cubed Cylinder Head

The images represent the P/N 25534393 cubed (unmachined) product. Chevrolet Performance does not supply a fully machined version of the C5R head. Image is for reference only.
355-T7 as-cast aluminum racing head
Professional porting and machining of combustion chambers required
No seats or guide machining
C5R rectangle-port designrequires aftermarket rectangle-port intake manifolds
Designed for big bore (4.100 min) LS7/C5R/LSX blocks
210cc as-cast intake ports
70cc as-cast exhaust ports, same as production LS6
30cc as-cast combustion chambers
All fasteners are metric
Capable of over 800 horsepower!
Standard LS exhaust port design