Aeroflow Bare GM LS3 11 Degree 6 Bolt 262cc Aluminium Cylinder Heads with 70cc Chamber (Pair) (AF95-0403)

Description

Bare GM LS3 11 Degree 6 Bolt 262cc Aluminium Cylinder Heads with 70cc Chamber (Pair)2.62″ x 1.31″ Intake Port, 1.70″ x 1.81″ Exhaust Port
Brand: AEROFLOW
Part Number: AF95-0403
Description:

The Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. Theseheads utilise ultra-smooth A356-T6 aluminium castings, new as-cast runner and chamberdesigns produce excellent flownumbers. This combined with a 5-angle competition valve job,diamond-honed bronze guides, hand bowl blending and professional assembly help to outperform some of the best brands in the business.

The Aeroflow Performance GM LS cylinder heads are designed for street / race performance engines to give the ultimate in flow at acompetitive price. Made from A356 aluminium castings, these11 LS3 Rectangle Port heads are designed to fit LS series engines with a 4.00″ or larger bore. These bare 262cc heads accept 2.165″ diameter intake valves and 1.60″ exhaust valves and have a thicker thanstock .750″ deck thickness. Available in 6-boltdesign to suit standard or LSXblock designs.

Note: Thread sealant must be used on all rocker bolts asthreads intersect with intake ports.

Additional Specifications: Head Specifications

Material: A356 Aluminium
Chamber Chamber: 70cc
Intake Port Volume: 262cc
Intake Port Dimension: 1.70″ x 2.62″
Exhaust Port Volume: 104cc
Exhaust Port Dimension: 1.70″ H x 1.815″ W
Spark Plug Location: OE Stock
Intake Valve Diameter: 2.165″ x 5.45″
Exhaust Valve Diameter: 1.60″ x 5.45″
Valve Stem Diameter: 8mm
ValveSpring Pocket I.D.: 1.64″
Valve Guide Material: Manganese Bronze
Valve Guide O.D.: .502″ (.560″ at base)
Rocker Design: LS3 Rails required
Valve Angle: 11
Deck Thickness: .750″
Important Information:

THREAD SEALANT MUST BE USEDON ROCKER BOLTS AS THREADS INTERSECT INTAKE PORTS

ROCKER BOLTS MUST BE TIGHTENED WHEN LIFTER ON BASE CIRCLE ONLY!! OR MAY RESULT IN STRIPPED THREADS

We recommend to check installed spring seat pressure & open pressure before installing your cylinder heads to make sure the spring pressure is correctfor your application.