205cc SBF "Renegade" 20° Race Head

The Most Powerful Standard Street/Strip Head Ever

Our New 205cc "Renegade" Ford is a clean sheet ground up redesign of our already formidable and proven 20° Ford Heads. The new 205cc flows an incredible 21 CFM more at peak flow while still averaging 7 CFM more from .200 - .500 lift over our previous best 205cc runner. If you're looking for the most powerful standard type small block Ford street/strip head, AFR's 205cc aluminum cyilnder head is your answer. With lightweight 8mm 2.080 intake valves, 1.600 exhaust valves this head moves tremendous volumes of air through conservative runner volumes, spelling big torque and horsepower numbers. Comes available with combustion chamber volumes of 58cc or 72cc. Exhaust ports and bolt pattern are raised .125 higher than stock (this rarely affects header or chassis fitment), AFR's new 205cc is the ultimate choice for 367 through 427 engines operating from 3500 RPM to 8000 RPM. AFR's trademark 3/4” thick head deck makes them ideal for heavy nitrous or blower applications.


2.080 valves will require aftermarket pistons notched for valve clearance. (see footnotes here) for additional information.

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 Bead Lock Intake Valve, 2.080" x 5.006" Overall Valve Length
AFR #7254 Bead Lock Exhaust Valve, 1.600" x 5.024" 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
AFR #8511 Manley 10° Chrome Moly Retainers
AFR #9009 10° Bead Lock Valve Keepers
AFR #6405 ARP 7/16" Rocker Studs
AFR #6103 Adjustable 5/16" Guide Plates
AFR #6612 Viton Valve Seals
AFR #8048 Hardened Spring Seat
AFR #9058 Intake Valve Seats
AFR #9069 Exhaust Valve Seats
AFR #9051 Bronze Valve Guides

Specifications, Features, and Optional Supporting Components
100 ft. lbs with 1/2" stud Head Torque w/ Moly Lube
55 ft. lbs Rocker Stud Torque
AFR #6832 Intake Port Gasket, 1.250" x 2.050" 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 #6320 Head Bolt Washers, Manley
AFR #6207 Stud Girdle
Super Victor Suggested Manifold
Victor Jr. Suggested Manifold
Autolite 3922 Spark Plug Starting Range
58cc or 72cc Combustion Chambers
Can be cut to 1.750, no deeper Spring Pocket
Standard Valve Spacing
Standard, will not accept rail rocker arms Rocker Arms
Standard Valve Angle
.008" per cc Angle Mill (6cc Maximum Optional Mill)
.006" per cc Flat Mill (3cc Maximum Optional Mill)
 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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