The Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. These heads utilize ultra-smooth A356-T6 aluminium 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 best brands in the business. Include valves, valve springs, retainers & locks, guide plates and 7/16" rocker studs

The Aeroflow Performance small block Chevy cylinder heads are designed for street / race performance engines to give the ultimate in flow at a competitive price. Made from A356 aluminium castings, these 220cc cylinder heads are ideal for operating in the idle to 7500 rpm range. These complete cylinder heads will fit a 4.000" bore and larger. The complete heads include larger then stock 2.080" diameter dual valve spring to handle up to .625" maximum lift. Suits solid and hydraulic roller camshafts.