Ferrea Pontiac 400/428/455 1.66in 11/32in 5.11in 12 Deg S-Flo 6000 Series Exhaust Valve - Set of 8

These Ferrea 6000 Series exhaust valves feature a 1.66-inch head diameter and a 5.11-inch overall length, with a 12-degree seat angle. They are designed with an 11/32-inch stem diameter, a common size for many performance applications. This set includes eight valves, intended for rebuilding or upgrading the cylinder heads on Pontiac 400, 428, or 455 cubic inch V8 engines.

The S-Flo design is a notable feature, which Ferrea developed to improve airflow into the combustion chamber. This can contribute to better engine performance and efficiency. The valves are constructed from durable materials suitable for exhaust temperatures and pressures, aiming for longevity in performance builds. They are a well-built component for those looking to restore or enhance their classic Pontiac V8's top end.

When rebuilding your engine's cylinder heads, ensuring you have reliable valves is crucial for proper sealing and performance. This set of eight Ferrea exhaust valves is a solid option for your Pontiac project.