Aeroflow AF95-2360 Complete 203cc Alloy Heads Pair for Ford Windsor 289 302 351

Aeroflow

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

AF95-2360

SOLD AS A PAIR

The Aeroflow Series of Aluminium Cylinder Heads are taking affordable performance street and strip cylinder heads to the next level. These heads utilize ultra-smooth A356-T6 aluminium castings, new as-cast runner and chamber designs produce excellent flow numbers. 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 small block Ford Windsor cylinder heads are designed for street / race performance engines to give the ultimate in flow at a budget price. Made from A356 aluminium castings the 203cc cylinder heads are ideal for operating in the idle to 7500 rpm range. The complete heads include larger then stock 1.575" diameter dual valve spring to handle up to .710" maximum lift. Suits hydraulic roller camshaft.

Note: These heads are drilled for 1/2" head bolts. If using a 7/16" bolt, you must use a head bolt bushing kit or step down head bolts.

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"

Suggested Components

• Head Gasket: Fel-Pro 1011-1
• Intake Gasket (1.28" x 2.13" Port Size): Fel-Pro 1262
• Exhaust Gasket (1.40" x 1.40" Square Port Size): Fel-Pro 1487
• Head Bolts: ARP 154-3701 or Aeroflow AF37-2115 for 7/16" bolts or ARP 154-3603 or Aeroflow AF37-2117 for 1/2" bolts
• Head Studs: ARP 154-4201 or Aeroflow AF37-2015 for 7/16" studs or ARP 154-4203 or Aeroflow AF37-2017 for 1/2" studs
• Spark Plugs (14mm x 3/4" reach with flat gasket seat): Champion RC9YC

Installed Components

• Intake Valves: Â 2.08" x 5.00" x 8mm, part no. AF59-3030
• Exhaust Valves: Â 1.60" x 5.03" x 8mm, part no. AF59-3031
• Valve Springs: Â 1.575" Dual spring
• Valve Retainers: Â 10° 8mm
• Valve Locks: Â 10° 8mm
• Valve Seals: Â 8mm x .502" Viton
• Rocker Arm Studs: Â 7/16"-14 x 7/16"-24, part no. AF59-3026
• Push Rod Guide Plates: Â 5/16" Flat, part no. AF59-3027

IMPORTANT NOTICE:

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