AeroFlow=Bare Small Block Ford Windsor 289-351 175cc Aluminum Cylinder Heads

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* With 61cc Chamber (Pair) 2.00" x 1.18" Intake Port, 1.32" x 1.27" Exhaust Port The Aeroflow Series of Aluminum Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. These heads utilize ultra-smooth A356-T6 aluminum castings, new as-cast runner and chamber designs produce excellent flow numbers. This combined with a 5-angle competition valve job, diamond-honed bronze guides, hand bowl blending and professional assembly help to outperform some of the