The Chevrolet Performance C5R/LSX/LS7 Racing Aluminum Cylinder Head is an unmachined "cubed" aluminum racing head designed for the professional engine or cylinder head builder. This allows a clean slate start to design the ultimate racing cylinder head for a 4.100" or larger bore LS-series racing engine. This cylinder head design has been validated in competition in the showroom stock C5R Corvette race car program, so be assured this head will live up to your demands!
The images shown represent a machined version of the cubed (unmachined) product. Chevrolet Performance does not supply a fully machined version of the C5R head. Images are for reference only.
Professional porting and machining of combustion chambers required
No seats or guide machining
C5R rectangle-port design - requires 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
Standard LS exhaust port design
Capable of over 800 horsepower!