RHS 12080 Pro Elite CNC-Ported SBC Aluminium Cylinder Head, Bare, 23 Degree

RHS 12080 Pro Elite CNC-Ported SBC Aluminium Cylinder Head, Bare, 23 Degree

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Cylinder Head Style: Bare
Material Type: Aluminium
Finish: Natural
Combustion Chamber Volume: 69cc
Intake Runner Volume: 228cc
Exhaust Runner Volume: 82cc
CNC-Machined Runners: Yes
CNC-Machined Combustion Chamber: Yes
Intake Port Shape: Rectangle
Intake Port Location: Standard
Exhaust Port Shape: Square
Exhaust Port Location: Standard
Intake Valve Diameter: 2.055"
Intake Valve Angle: 23
Exhaust Valve Diameter: 1.600"
Exhaust Valve Angle: 23
Oiling Style: Through Pushrod
Accessory Bolt Holes Drilled: Yes
Sold in Quantity: Each
MFG. Part #: 12080


RHS now offers a 23° aluminium head for Small Block Chevy applications that is CNC-ported from the factory for precision accuracy and durability. The CNC-ported 228cc intake and 82cc exhaust runners optimize volume, atomization and velocity, while the 69cc combustion chambers are 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. CNC-machining the combustion chamber also improves the airflow efficiency of the cylinder heads. The 2.055" multi-angle intake and 1.600" radiused exhaust valve seats allow for superior airflow, thereby significantly increasing horsepower. In addition, these 23° SBC heads feature a refined water jacket for better water flow that reduces engine hot spots, while an extra-thick deck allows angle milling and improves head gasket retention in boosted and nitrous applications. RHS has designed a race-winning aluminium head that utilizes the latest in cutting-edge design technology to maximize airflow and boost horsepower in both circle track and drag racing classes.

  • CNC-ported 228cc intake & 82cc exhaust runners

  • 2.055" Multi-angle intake & 1.600" radiused exhaust seats allow for superior airflow for increased horsepower

  • CNC-ported 69cc combustion chamber relieves valve shrouding & improves airflow efficiency when valve is too close to chamber wall

  • Clean Cast Technology delivers superior port-to-chamber transitions for greater airflow efficiency right out of the box

Important Messages:

  • This product is discontinued.

Choose carefully as clearance items are not returnable for exchange or credit.

*Photo for illustration purposes only