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This Manley Extreme Duty exhaust valve features a 1.940 in head, 5.422 in overall length and a 0.3415 in stem, developed for severe heat and load environments. Targeted at Top Fuel, Funny Car, marine Big Block Chevy and restricted circle-track Small Block Chevy uses, the valve’s swirl-polished underheads, fully machined combustion faces and chrome stems with hard tips help maintain airflow, combustion efficiency and longevity under strain.
Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem
