185cc SBF "Renegade" 20° Street Head

661-257-8124 35 AFR`s 185cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for engines from 302-393 cubic inches, operating up to 6000-6500 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3. Not compatible with OEM pistons. Component upgrade and machining options are available to customize AFR Heads to your specific build here.

185cc SBF Aluminum Cylinder Head Flow Chart

Tested on 4.060 Bore

185cc SBF Aluminum Cylinder Head Flow Chart



Included Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
AFR #7251 8mm Bead Lock Intake Valve 2.020" x 4.900" O.A.L.
AFR #7250 8mm Bead Lock Exhaust Valve 1.600" x 4.950" O.A.L.
AFR #7263 Pedastal 8mm Bead Lock Intake Valve 2.020" x 5.080" O.A.L
AFR #7264 Pedastal 8mm Bead Lock Exhaust Valve 1.600" x 5.100" O.A.L
AFR #8017 PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available)
AFR #8514 7° Manley Steel Retainers 1.245" O.D x .885" I.D x .655" I.D
AFR #9007 7° Bead Lock Valve Keepers
AFR #6409 ARP 3/8" Rocker Studs
AFR #6103 Adjustable 5/16" Guide Plates
AFR #6612 Viton Valve Seals .600" O.D x .495" I.D
AFR #8042 Hardened Valve Spring O.D Locator 1.380" O.D x .570" 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
AFR #6226 Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)



Specifications & Features:
A356 Aluminum Material
185cc Intake Port Volume
2.045" H x 1.205" W 3/8 Radius Intake Port Dimension
Stock Intake Port Location
70cc Exhaust Port Volume
1.355" H x 1.360" W Exhaust Port Dimension
Stock Exhaust Port Location
58cc, 60cc, or 72cc Combustion Chamber Size
Perimeter Bolt Valve Cover Bolt Pattern
20° Valve Angle
1.460" 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
Note:Angle mills might require a .120" Thick intake gasket.
2.025 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, Fel-Pro #1262
Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.
AFR #6837 Exhaust Port Gasket, Fel-Pro #1415
AFR #6808 Head Gasket, 302/351W, Fel-Pro #1011-1
AFR #6318 SB Ford 1/2" Bolt Head Bolts, ARP #154-3603
AFR #6317 SB Ford 1/2" Bolt Head Studs, ARP #254-4503
AFR #6319 1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708
AFR #6320 Head Bolt Washers, Manley
AFR #6207 Stud Girdle
Performer or Performer RPM Suggested Manifold
Autolite 3924 Spark Plug Starting Range
 Model      Product Name   Price   Buy Now 
 1387   SBF 185cc, No EGR or Air Pump, Strip Head, 72cc chambers, Stud Mount, complete w/parts   SBF 185cc, No EGR or Air Pump, Strip Head, 72cc chambers, Stud Mount, complete w/parts   $1,643.00  Buy Now 
 1388   SBF 185cc, No EGR or Air Pump, Strip Head, 58cc chambers, Stud Mount, complete w/parts   SBF 185cc, No EGR or Air Pump, Strip Head, 58cc chambers, Stud Mount, complete w/parts   $1,643.00  Buy Now 
 1420*   SBF 185cc Street Heads, 72cc Chambers, Stud Mount, Complete with parts   SBF 185cc Street Heads, 72cc Chambers, Stud Mount, Complete with parts   $1,643.00  Buy Now 
 1422*   AFR SBF 185cc, Street Heads, 58cc chambers, Stud Mount, complete w/parts   AFR SBF 185cc, Street Heads, 58cc chambers, Stud Mount, complete w/parts   $1,643.00  Buy Now 
 1492*   AFR SBF 185cc Street Heads, 60cc chambers, Pedestal Mount, complete w/parts   AFR SBF 185cc Street Heads, 60cc chambers, Pedestal Mount, complete w/parts   $1,643.00  Buy Now 
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Air Flow Research | 28611 W. Industry Drive | Valencia, CA 91355 | 661-257-8124

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