Proflow Cylinder Heads, LS SuperMax-B 260, Aluminium Bare Cylinder Heads, (6-Bolt) LS3/L76/L77/L92/L98/LSX, 260cc Intake, 70cc Chamber, , Pair

Description

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.

SPECIFICATIONS
Combustion Chamber	70 cc
Intake Port Volume	260 cc
Intake Port Dimensions	2.62” (H) x 1.31” (W)
Exhaust Port Volume	104 cc
Exhaust Port Dimensions	1.70” (H) x 1.815” (W)
Spark Plug Location	OEM
Intake Valve Diameter	2.165”
Exhaust Valve Diameter	1.60”
Valve Stem Diameter	8 mm
Valve Spring Pocket ID	1.64”
Valve Guide OD	0.502” (0.560” at base)
Maximum Valve Lift	0.750”
Rocker Stud Thread Size	OE LS3 Style
Valve Angle	11°
Deck Thickness	0.750”

Description

SPECIFICATIONS
Combustion Chamber	70 cc
Intake Port Volume	260 cc
Intake Port Dimensions	2.62” (H) x 1.31” (W)
Exhaust Port Volume	104 cc
Exhaust Port Dimensions	1.70” (H) x 1.815” (W)
Spark Plug Location	OEM
Intake Valve Diameter	2.165”
Exhaust Valve Diameter	1.60”
Valve Stem Diameter	8 mm
Valve Spring Pocket ID	1.64”
Valve Guide OD	0.502” (0.560” at base)
Maximum Valve Lift	0.750”
Rocker Stud Thread Size	OE LS3 Style
Valve Angle	11°
Deck Thickness	0.750”