ENGINE PRO RACING Chevrolet LS3,L76,L77,L98 Rectangle intake ports, 15 degree OEM head bolt desig

Detailed Overview of the OE 4 Head Bolt Design

The OE 4 Head Bolt Design is a cutting-edge solution crafted to enhance engine performance through advanced engineering and optimized dimensions. Made from lightweight aluminium, this design features a combustion chamber volume of 68cc and an intake runner volume of 276cc, facilitating superior airflow and combustion efficiency. The intake port dimensions of 2.585″ by 1.275″ and the exhaust port, shaped D with dimensions of 1.467″ by 1.614″, contribute to effective exhaust expulsion and intake dynamics.

Equipped with intake and exhaust valves measuring 2.165″ and 1.600″ respectively, this design ensures robust airflow characteristics. The flow data, recorded at 28″ (CFM), indicates impressive intake flow rates that peak at 338 CFM and exhaust flow rates that reach 228 CFM, demonstrating the head’s capability for high-performance applications. Additional features such as a standard valve length, a valve angle of 15 degrees, and durable manganese bronze valve guides further enhance reliability and performance, making the OE 4 Head Bolt Design a prime choice for automotive enthusiasts seeking exceptional engine performance.