Ferrea Pontiac 400/428/455 1.66in 5.23in 12 Deg U/C Dish Head 5000 Series Exhaust Valve - Set of 8

This set includes eight Ferrea 5000 Series exhaust valves, designed for Pontiac 400, 428, and 455 cubic inch engines. These valves feature a 1.66-inch dish head diameter and a 5.23-inch overall length, with a 12-degree undercut stem for improved seating.

The 5000 Series valves are built with high-grade materials to handle the demands of performance engines. Their specific dimensions and undercut stem design contribute to proper valve seating and sealing within the cylinder head, which is crucial for maintaining compression and efficient combustion. These valves are a solid option for rebuilding or upgrading the valvetrain in your Pontiac V8.