Set of (8) each 2.02" intake and 1.60 exhaust stainless steel street performance valves for Chevrolet small block engines. P/N HPV-4 (exh) and HPV-13 (int) from Elgin Industries (Elgin, IL. USA). Valve features include: EV-8 fire-forged and hardened stainless steel - 1-keeper groove stock 4.930" overall length 11/32" stock stem diameter hardened tip, hardened stem 6500 RPM rated From Elgin