Complete Small Block Ford Windsor 289-351 175cc Aluminium Cylinder Heads with 61cc Chamber (Pair) 2.00" x 1.18" Intake Port, 1.32" x 1.27" Exhaust Port

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.

The Aeroflow Performance small block Ford Windsor cylinder heads are designed for street performance engines to give the ultimate in flow at a budget price. Made from A356 aluminium castings, the 175cc cylinder heads are ideal for operating in the idle to 6500 rpm range. The complete heads include larger then stock 1.46" diameter valve spring to handle .525" lift. Suits flat tappet camshaft.

Note: These heads are drilled for 1/2" head bolts. If using a 7/16" bolt, you must use a head bolt bushing kit or step down head bolts.