PRO ELITE HEADS

RHS PRO ELITE LS3 CYLINDER HEADS SURE DO FLOW A LOT OF AIR—372 PEAK CFM ON THE INTAKE SIDE AT 0.700 INCHES OF VALVE LIFT AND 243 PEAK CFM ON THE EXHAUST SIDE AT 0.800 INCHES OF VALVE LIFT.

The Pro Elite LS3 heads have a six-bolt head design to provide more clamping force, which prevents head gaskets from popping on high-compression and boosted engines. It also makes the heads compatible with RHS LS Race and Chevrolet Performance LSX blocks. If you have an OEM 4-bolt block, you can still use the Pro Elite LS3 heads by simply leaving the bolt holes for the center cylinders unused.