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.
Material
A356.2 Aluminum
Intake Port Volume
276cc
Intake Port Location
Stock
Exhaust Port Volume
92cc
Exhaust Port Location
Stock
Combustion Chamber
70cc
Valve Angle
15°
Minimum Bore Diameter
4.000"
Maximum Valve Lift (in.)
0.55”
Intake valve
2. 165" 8mm
Exhaust valve
1. 60" 8mm
$1,573.95Purchase directly from our trusted partner VPW. Buy Now on VPW
