Proflow does not sacrifice quality for a low price- you get both with our aluminium cylinder heads. Our LS3 cylinder heads are designed for street / race performance engines to give the ultimate in flow at a competitive price. Cast from A356 aluminium, these 15 LS3 rectangle port heads are designed to fit LS series engines with a 4.00" or larger bore. These bare 275cc heads accept 2.165" diameter intake valves and 1.60" exhaust valves and have a 0.625" deck thickness. Suits 6-bolt standard or LSX block designs.

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Proflow Proflow Cylinder Heads, LS SuperMax, 6-Bolt LS3/L76/L77/L92/L98/LSX, 275cc Intake, 70cc Chamber, Aluminium, Bare, Pair

Proflow Proflow Cylinder Heads, LS SuperMax, 6-Bolt LS3/L76/L77/L92/L98/LSX, 275cc Intake, 70cc Chamber, Aluminium, Bare, Pair

$1,599.00