Pontiac H/P 1.770in Exhaust Valve

The Pontiac H/P 1.770in Exhaust Valve from FERREA represents a precision-engineered replacement component designed for high-performance Pontiac V8 engines requiring OEM or superior exhaust flow characteristics. This valve is built for engine builders, restoration specialists, and performance enthusiasts who demand reliable combustion chamber sealing and efficient exhaust gas evacuation. Whether you're rebuilding a classic Pontiac engine or upgrading an existing cylinder head, a quality exhaust valve is fundamental to maintaining compression integrity and maximizing power output.

Manufactured in stainless steel, the Pontiac H/P 1.770in Exhaust Valve features a 1.770-inch head diameter paired with an 11/32-inch valve stem and a total length of 5.230 inches, ensuring correct fitment within 5000 Series cylinder heads. The stainless construction provides superior corrosion resistance and thermal stability compared to standard cast iron alternatives, allowing the valve to withstand prolonged exposure to exhaust heat and chemical byproducts. The precision head-to-stem geometry is critical for achieving a reliable seal against the valve seat, minimizing blowby and maintaining compression ratios necessary for consistent engine performance and longevity.

This valve is ideal for anyone rebuilding or refreshing Pontiac V8 cylinder heads, whether for street, restoration, or light performance applications. Installation requires proper valve seat machining and lapping to ensure optimal contact and sealing—a task best performed by experienced machine shops or engine builders familiar with Pontiac specifications. The 5000 Series designation confirms compatibility with specific Pontiac head casting numbers; verify your cylinder head part number before ordering to guarantee correct fitment. Each valve is sold individually, so calculate total quantities needed based on your engine's cylinder count and whether you are replacing exhaust valves in one or both cylinder heads.