205cc SBF "Renegade" 20° Competition Head

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 here.

205cc SBF Race Ready Cylinder Heads Flow Chart

Tested on 4.060 Bore

205cc SBF Cylinder Head Flow Chart



Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
AFR #7255 8mm Bead Lock Intake Valve, 2.080" x 5.000" Overall Valve Length
AFR #7254 8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length
AFR #8000 PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 (upgrades available)
AFR #8511 10° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D
AFR #9009 10° Bead Lock Valve Keepers with lashcap recess
AFR #6405 ARP 7/16" Rocker Studs
AFR #6103 Adjustable 5/16" Guide Plates
AFR #6612 Viton Valve Seals .600" O.D x .495" I.D
AFR #8048 Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D
AFR #9059 Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep
AFR #9069 Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep
AFR #9051 8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L



Specifications & Features:
A356 Aluminum Material
205cc Intake Port Volume
2.130" H x 1.300" W 3/8 Radius Intake Port Dimension
Stock Intake Port Location
70cc Exhaust Port Volume
1.400" H x 1.400" W Exhaust Port Dimension
Raised .125" Exhaust Port Location
58cc or 72cc Combustion Chamber Size
Perimeter Bolt Valve Cover Bolt Pattern
20° Valve Angle
1.580" O.D Valve Spring Pocket Diameter
1.625" O.D Max 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 Seat Spark Plug Dimensions
1/2" Head Bolt Diameter

Recommended Components:
AFR #6832 Intake 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 #6839 Exhaust Port Gasket, Fel-Pro #1487
AFR #6808 Head Gasket, Fel-Pro #1011-1
AFR #6318 SB Ford 1/2" Bolt Head Bolt Kit, ARP #154-3603
AFR #6317 SB Ford 1/2" Bolt Head Stud Kit, ARP #254-4503
AFR #6319 1/2" Bolt - 7/16" Thread Head Bolts, ARP 254-3708
AFR #6320 Head Bolt Washer Kit, Manley
AFR #6207 Stud Girdle
Super Vic or Vic Jr. Suggested Manifold
Autolite 3922 Spark Plug Starting Range
 Model      Product Name   Price   Buy Now 
 1450   AFR SBF 205cc, Race Heads, 58cc chambers, Stud Mount, complete w/parts   AFR SBF 205cc, Race Heads, 58cc chambers, Stud Mount, complete w/parts   $1,927.00  Buy Now 
 1458   AFR SBF 205cc Race Head, 69cc chamber, Stud Mount, complete w/parts   AFR SBF 205cc Race Head, 69cc chamber, Stud Mount, complete w/parts   $1,927.00  Buy Now 
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Air Flow Research | 28611 W. Industry Drive | Valencia, CA 91355 | 661-257-8124

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