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MANLEY 11505-8 Exhaust Valve Kit Race Series (1.500" Head Dia., 5.035" O/A Length, 0.3415" Stem) for CHEVROLET Small Block ymm_68 You will then have a ymm_23
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MANLEY 11505 8 Exhaust Valve Kit Race Series (1.500" Head Dia., 5.035" O A Length, 0.3415" Stem) for CHEVROLET Small Block ymm_68 You will then have a ymm_23 You will then have a vacuum boost connection suitable for 4mm tube or similar that can be used to install a boost gauge Configurable trigger patterns or preset triggering options Swirl polished underhead areas and fully machined combustion faces optimize Airflow and combustion efficiency Recommended for Alcohol Engines: These valves are recommended for exhaust valves in alcohol engines
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