AFR-1456 HR Renegade Competition Heads, 220cc Intake, 72cc Chamber, With Upgraded 8019 Valve Spring To Suit Hydraulic Roller Camshaft, Ford 289, 302, 351 Windsor (Pair)
AFR-1456 HR
AFR-1456 HR Renegade Competition Heads, 220cc Intake, 72cc Chamber, With Upgraded 8019 Valve Spring To Suit Hydraulic Roller Camshaft, Ford 289, 302, 351 Windsor (Pair)
 

AFR's largest and highest flowing head for the small block ford is the best in-line head money can buy. Featuring 220cc intake runners, this package is recommended for race applications and radical "Pro-Street" builds. Available with 58cc or 72cc combustions chambers, you can further customize your setup with our various components upgrades and available machining options. AFR heads are available bare (without parts). 

SBF 220cc Aluminum Cylinder Heads
Part # Rocker Type Combustion Chamber
1451 Stud Mount 58cc
1456 Stud Mount 72cc

 

220cc Street Head Flow Chart
  .200 .300 .400 .500 .600 .700 .800
Int 149 205 264 296 318 334 338
Exh 126 173 220 246 251 255 258

Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.155", 3/4" radius plate exhaust, 1 7/8" curved pipe

 

Included Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve 2.100" x 5.000" O.A.L.
AFR7256
8mm Bead Lock Exhaust Valve 1.570" x 5.030" O.A.L.
AFR7248
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400
AFR8000
Manley 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D
AFR8511
10° Bead Lock Keepers with lashcap recess
AFR9009
ARP 7/16" Rocker Studs
AFR6405
Adjustable 5/16" Guide Plates
AFR6103
Viton Valve Seals .600" O.D x .495" I.D
AFR6612
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
AFR8048
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep
AFR9059
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep
AFR9069
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L
AFR9051

 

Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
220cc
Intake Port Dimension
2.265" H x 1.325" W x 3/8 Radius
Intake Port Location
Stock
Exhaust Port Volume
70cc
Exhaust Port Dimension
1.445" H x 1.595" W
Exhaust Port Location
Raised .375"
Combustion Chamber Size
58cc or 72cc
Valve Cover Bolt Pattern
Perimeter Bolt
Valve Angle
20°
Valve Spring Pocket Diameter
1.580" O.D
Max Valve Spring Pocket Machining
1.580" O.D
Deck Thickness
.750"
Minimum Bore Diameter
4.000"
Flat Mill
.006" per cc 55cc Max (from 58cc); 69cc Max (from 72cc);
Angle Mill
.009" per 52cc Max (from 58cc); 66cc Max (from 72cc);
Minimum Cross Sectional Area
2.345 sq. in.
Spark Plug Dimensions
14mm x .750" w/Gasket Seat
Head Bolt Diameter
1/2"

 

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