205cc SBF "Renegade" 20° Competition Head

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AFR`s 205cc "Competition" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and very aggressive street/strip builds. Component upgrade and machining options are available to customize AFR Heds to your specific build, please email, call or chat for details. 

 

AFR PN's 1450 and 1458

 

205cc SBF Race Ready Cylinder Heads Flow Chart

Tested on 4.060 Bore

 


 

Basic Package Components

100% CNC Ported Combustion Chambers

100% CNC Ported Exhaust Ports

100% CNC Ported Intake Ports

Competition 5-angle Valve Job

AFR #72558mm Bead Lock Intake Valve, 2.080" x 5.000" Overall Valve Length

AFR #72548mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length

AFR #8000PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 (upgrades available)

AFR #851110° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D

AFR #900910° Bead Lock Valve Keepers with lashcap recess

AFR #6405ARP 7/16" Rocker Studs

AFR #6103Adjustable 5/16" Guide Plates

AFR #6612Viton Valve Seals .600" O.D x .495" I.D

AFR #8048Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D

AFR #9059Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep

AFR #9069Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep

AFR #90518 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L

 

Specifications & Features:

A356 AluminumMaterial

205ccIntake Port Volume

2.130" H x 1.300" W 3/8 RadiusIntake Port Dimension

StockIntake Port Location

70ccExhaust Port Volume

1.400" H x 1.400" WExhaust Port Dimension

Raised .125"Exhaust Port Location

58cc or 72ccCombustion Chamber Size

Perimeter BoltValve Cover Bolt Pattern

20°Valve Angle

1.580" O.DValve Spring Pocket Diameter

1.625" O.DMax Valve Spring Pocket Machining

.750"Deck Thickness

4.000"Minimum Bore Diameter

.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);Flat Mill

.009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc);Angle Mill

2.165 sq. in.Minimum Cross Sectional Area

14mm x .750" w/Gasket SeatSpark Plug Dimensions

1/2"Head Bolt Diameter

 

Recommended Components:

AFR #6832Intake Port Gasket, 1.200" X 2.000" w/ 3/8" radius, Fel-Pro #1262

Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.

AFR #6839Exhaust Port Gasket, Fel-Pro #1487

AFR #6808Head Gasket, Fel-Pro #1011-1

AFR #6318SB Ford 1/2" Bolt Head Bolt Kit, ARP #154-3603

AFR #6317SB Ford 1/2" Bolt Head Stud Kit, ARP #254-4503

AFR #63191/2" Bolt - 7/16" Thread Head Bolts, ARP 254-3708

AFR #6320Head Bolt Washer Kit, Manley

AFR #6207Stud Girdle

Super Vic or Vic Jr.Suggested Manifold

Autolite 3922Spark Plug Starting Range