Description

Complete Small Block Chev 327-350-400 212cc Aluminium Cylinder Heads with 66cc Chamber (Pair)2.21″ x 1.30″ Intake Port, 1.42″ x 1.53″ Exhaust Port
Brand: AEROFLOW
Part Number: AF95-2400
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. Include valves, valve springs,retainers & locks, guide plates and 7/16″ rocker studs

The Aeroflow Performance small block Chevy cylinder heads are designed for street / race performance engines to give the ultimate in flow at a competitive price. Made from A356 aluminium castings, these 210cc cylinder heads are idealfor operating in the idle to 7500 rpm range. These completecylinder heads will fit a 4.00″ bore and larger. The complete heads include larger then stock 1.57″ diameter dual valve spring to handle up to .625″ maximum lift. Suits solid and hydraulic roller camshafts.

Additional Specifications: Head Specifications

Material: A356 Aluminium
Chamber Chamber: 66cc
Intake Port Volume: 210cc
Intake Port Dimension: 2.21″ x 1.30″
Exhaust Port Volume: 72cc
Exhaust Port Dimension: 1.42″ H x 1.53″ W
Exhuast PortLocation: Raised .250″
Spark Plug Location: Angled
Intake Valve Diameter: 2.08″
Exhaust Valve Diameter: 1.60″
Valve Stem Diameter: 8mm
Valve Spring Pocket I.D.: 1.57″
Valve Guide Material: Bronze
Valve Guide O.D.: .502″ (.560″ at base)
Rocker Stud Thread Size:7/16″ x 14
Valve Angle: 23
Deck Thickness: .750″

Valve Spring Specifications

Installed Height:1.990″
Installed Pressure:190lbs
Open Pressure:430lbs @ 500″
Maximum Lift:.750″ @ 1.240″
Coil Bind:1.190″
Spring Outside Diameter:1.570″
Spring Inside Diameter:0.790″
Spring Free Length:2.480″
Valve Spring Retainer Outside Diameter:1.500″
Valve Spring Inside Diameter:0.465″
Valve Spring Retainer Step 1:1.120″
Valve Spring Retainer Step 2:0.705″
Valve Spring Locator Outside Diameter:1.6100″
Valve Spring Locator Inside Diameter:0.565″
Important Information:

IMPORTANT NOTICE:

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