Description

Complete Small Block Ford Windsor 289-351 203cc Aluminium Cylinder Heads with 58cc Chamber (Pair)2.13″ x 1.28″ Intake Port, 1.40″ x 1.40″ Exhaust Port
Brand: AEROFLOW
Part Number: AF95-2360
Description: Head Specifications

Material: A356 Aluminium
Chamber Chamber: 58cc
Intake Port Volume: 205cc
Intake Port Dimension: 2.13″ x 1.28″
Exhaust Port Volume: 71cc
Exhaust Port Dimension: 1.40″ H x 1.40″ W
Exhaust PortLocation: Raised .250″
Spark Plug Location: OEM
Intake Valve Diameter: 2.08″
Exhaust Valve Diameter: 1.60″
Valve Stem Diameter: 8mm
Valve Spring Pocket I.D.: 1.64″
Valve Guide Material: Manganese Bronze
Valve Guide O.D.: .490″ (.560″atbase)
Rocker Stud Thread Size: 7/16″ x 14
Valve Angle: 20
Deck Thickness: .750″
Additional Specifications: Head Specifications

Material: A356 Aluminium
Chamber Chamber: 58cc
Intake Port Volume: 203cc
Intake Port Dimension: 2.13″ x 1.28″
Exhaust Port Volume: 71cc
Exhaust Port Dimension: 1.40″ H x 1.40″ W
Spark Plug Location: OEM
Intake Valve Diameter: 2.08″
Exhaust Valve Diameter: 1.60″
Valve Stem Diameter: 8mm;
Valve Spring Pocket I.D.: 1.64″
Valve Guide Material: Manganese Bronze
Valve Guide O.D.: .490″ (.560″ at base)
Rocker Stud Thread Size: 7/16″ x 14
Valve Angle: 20
Deck Thickness: .750″

Valve Spring Specifications

Installed Height:2.040″
Installed Pressure:175lbs
Open Pressure:425lbs @ 500″
Maximum Lift:.790″ @ 1.250″
Coil Bind:1.190″
Spring Outside Diameter:1.565″
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:1.615″
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.