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The Ferrea Competition Plus exhaust valve set for Chevrolet big‑block engines. This set of eight valves lists a 1.880 in head, 11/32 in stem, 5.5 in overall length and a 15° seat angle with S‑Flo designation. These valves are specified where the 1.88 in head and the longer 5.5 in overall length are required to match specific big‑block exhaust port and camshaft configurations.
Ferrea Chevrolet BB 1.88in 11/32in 5.5in 15 Deg S-Flo Competition Plus Exhaust Valve - Set of 8
