Pontiac H/P 1.660 Exhaust Valves

The Pontiac H/P 1.660 Exhaust Valves from FERREA represent a precision-engineered solution for serious V8 builders and performance enthusiasts seeking OEM-quality replacement or upgraded valve sets. These stainless steel exhaust valves are engineered to handle the demands of high-output Pontiac V8 engines, whether you're rebuilding a stock long-block, refreshing cylinder heads after extended use, or constructing a performance platform. The 5000 Series designation indicates FERREA's commitment to durability and thermal stability in demanding combustion environments.

Each valve in this eight-piece set features a 1.660-inch head diameter optimized for the Pontiac V8 architecture, paired with an 11/32-inch valve stem diameter that ensures proper sealing and guide compatibility on factory heads. The 5.110-inch overall length maintains correct installed height and combustion chamber geometry, preventing valve recession and maintaining optimal seat contact pressure. Stainless steel construction delivers superior corrosion resistance and dimensional stability across thermal cycling, critical for engines experiencing sustained heat exposure or extended storage between builds. The precision-ground stem and head surfaces meet exacting OEM tolerances, enabling tight valve-to-seat interfaces that minimize blow-by and maximize power transfer.

Mechanics and engine builders routinely specify FERREA valves for complete head resurfacing jobs, vintage restoration projects, and custom performance builds where original equipment has worn beyond safe operating limits. This complete set of eight exhaust valves streamlines ordering and installation—no need to source individual pieces or hunt for matching pairs. Direct fitment with Pontiac V8 cylinder heads (including Edelbrock aluminum and OEM iron castings) makes this solution ideal for street engines, bracket racing builds, and show-quality restorations where reliability and authenticity matter equally.