Manley Severe Duty Stainless Exhaust Valve - 1.940 in Head - 0.342 in Valve Stem - 6.400 in Long - Big Block Chevy FIV915-23S-WL GMC Sierra Limited/Chevrolet Silverado Legacy

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Manley Severe Duty Stainless Exhaust Valve - 1.940 in Head - 0.342 in Valve Stem - 6.400 in Long - Big Block Chevy FIV915-23S-WL GMC Sierra Limited/Chevrolet Silverado LegacyManley Valve Exhaust, Valve BBC PONT 1. 940. Product Description: Exhaust Valve Severe Duty 1. 940 in Head 0. 342 in Valve Stem 6. 400 in Long Stainless Big Block Chevy Manley Performance high performance and racing engine parts have been powering winners since 1966! Manley Budget Replacement Valves are better than stock valves. Manley Budget Performance Valves are for the value conscious engine builder. Manley Street Master Valves are excellent for