Racing Head Service RHS Pro Action 23 Degree SBC w/ CNC Porting 12080

Description:

RHSow offers a 23? aluminum head for Small Block Chevy applicationshat 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 air- flow 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 degree 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. RHSas designed a race-winning aluminum head that utilizes the latest in cutting-edge design technology to maximize airflow and boost horsepower in both circle track and drag racing classes.