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In stock
Part Number
AF95-2360
USD 1,624.35

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

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 Port Location:  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"at base)
Rocker Stud Thread Size: 7/16" x 14
Valve Angle:  20°
Deck Thickness:  .750"
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 Port Size):  Fel-Pro 1487
Head Bolts:  ARP 154-3605 (7/16") or 154-3603 (1/2")
Head Studs:  ARP 154-4003
Spark Plugs (14mm x 3/4" reach with flat gasket seat):  Champion RC9YC
Installed Components

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

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