| This single Pro Elite™ CNC-Port 6-Bolt Cylinder Head is a premium LS3 performance head, ensuring great power on high horsepower and boosted engine builds.
RHS® Pro Elite™ CNC-Port 6-Bolt Cylinder Heads for GM LS3 Engines utilize the popular LS 6-bolt head design, making them compatible with the RHS® LS Race Block, GM LSX Block and OEM 4-bolt blocks.
Increased clamping capacity over standard 4-bolt design improves head gasket retention
CNC-machined intake & exhaust runners as well as combustion chambers increase flow capability
.660” & .700” Lift valve spring assemblies allow for higher lift cams and increased RPM
Designed for high horsepower and boosted GM LS3 applications
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