These RHS Pro Elite BBC 24-degree aluminum heads feature multi-angle intake and radiused exhaust valve seats for up to 5% more airflow and increased horsepower. The thick deck surface of these precision-machined heads allows them to be angle milled and provides increased rigidity to improve head gasket retention in boosted and nitrous applications. The best features, however, are the CNC-ported intake and exhaust runners for optimal air volume, atomization and velocity.

24-degree valve angles & raised exhaust ports unleash the awesome power potential of this BBC head while utilizing a conventional valve train & pistons. Increased airflow and efficiency are essential for those drag racing and marine applications looking for the biggest possible gains in horsepower and torque. Cylinder head engineers at RHS™ have designed a Big Block Chevy 24-degree CNC-ported cylinder head to maximize airflow and assure port-to-port consistency.  

The combustion chambers are also CNC-ported to relieve valve shrouding that occurs in “as cast” chambers when the edge of a valve is in close proximity to the combustion chamber wall. The RHS Pro Elite BBC 24-Degree CNC-Ported Aluminum Cylinder Heads are available with either a 339cc or 376cc runner volume and a 121cc combustion chamber and are designed using the RHS exclusive Clean Cast™ Technology to deliver superior port-to-chamber transitions for greater airflow. In addition, these heads feature a refined water jacket for more even water flow, which reduces hot spots in both the cylinder heads and the engine.
 
For more information about the RHS™ Pro Elite™ BBC 24-Degree CNC-Ported Aluminum Cylinder Heads or any other RHS™ product, call 877-776-4323 or www.racingheadservice.com.