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

 

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