Ferrea Pontiac 400/428/455 1.77in 5.23in 12 Deg S-Flo 6000 Series Exhaust Valve - Set of 8

In this set, you get eight Ferrea 6000 Series exhaust valves, each measuring 1.77 inches in diameter and 5.23 inches in length, designed with a 12-degree S-Flo profile. These valves are specifically made for Pontiac 400, 428, and 455 cubic inch V8 engines, often found in classic muscle cars where performance and reliability are key.

Ferrea is known for making well-built engine components, and these valves are no exception. They are constructed from high-strength steel, chosen for its ability to withstand the high temperatures and pressures found in performance V8 engines. The S-Flo design helps improve airflow into the cylinder, which can lead to better combustion and a more responsive engine. This updated design is a solid option for anyone rebuilding or upgrading their Pontiac V8 top end, aiming for improved performance without sacrificing durability.

When rebuilding your Pontiac's engine, using quality valves like these Ferrea 6000 Series is important for ensuring proper sealing and efficient operation. Make sure to consult your engine's service manual for the correct installation procedures and any specific hardware or machining requirements.