Proflow Cylinder Heads, LS3 SuperMax-B 260, Bare, Holden Commodore, Chev, Alumin

Part Number :

LS3 SuperMax 260, Aluminium Cylinder Heads 15deg, Holden Chev, Bare 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 260cc 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