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The Manley Extreme Duty exhaust valve with a 1.880 in head, 5.422 in overall length and a 0.3415 in stem is built for applications requiring exceptional heat and force resistance. The Extreme Duty Series addresses Top Fuel, Funny Car, marine Big Block Chevy and restricted circle-track needs. Swirl-polished underheads, fully machined faces, chrome stems and hard tips improve flow, combustion efficiency and longevity.
Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3415in Stem
