RHS™ Pro Elite™ BBC 24-Degree CNC-Ported Aluminum Cylinder Heads

[CPG Marketing]

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.


These 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. 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 us at 1-877-776-4323, or visit us online at www.racingheadservice.com.

Quick Summary
Product: RHS™ Pro Elite™ BBC 24-Degree CNC-Ported Aluminum Cylinder Heads
Part Number: #11034 (339cc Runner, 2.250”/1.880” Valves); #11038 (376cc Runner, 2.300”/1.880” Valves)

Features & Benefits:
• BBC 24-degree aluminum cylinder heads for drag & marine racing applications
• Multi-angle intake & radiused exhaust seats for superior flow & increased horsepower
• Thick deck surface allows angle milling & increased rigidity; improves head gasket retention
• CNC-ported 376cc or 339cc intake; 135cc exhaust runners; 121cc chamber volume

Visit RHS Website For More Information