165cc SBF "Renegade" 20° Street Head

The Small Port, High Velocity, Emission Legal Torque Monster

Our NEW 165cc "Renegade" Ford is our re-engineered ground up redeisng of our already formidable and proven 20° Ford Heads. These new 165cc flow significantly more, averaging a 12 CFM increase from .200-.550 lift than our previous best 165cc. For the ultimate 289 or 302ci small block Ford street car, you've got to use AFR's all new 165cc emissions legal aluminum cylinder heads. With lightweight 8mm 1.900 intake valves, 1.600 exhaust valve, combustion chamber volume of 58cc, and 68cc exhaust ports, AFR's new 165cc is perfect for 289 and 302 engines operating from idle to 6000 rpm. A 3/4" thick head deck makes it ideal for nitrous or blower applications. These heads will not accept rail rocker arms. Hardened push rods required on all applications. Note: 1986 5.0L must have piston notched for clearance. Unlike some aftermarket heads, AFR's performance cylinder heads (CARB EO #250-3) fit all your stock components; no special parts are required! (see footnotes here for additional information)


Hydraulic roller cams typically experience valve float at 6000-6200 rpm because of their fast ramp rates. AFR suggests you upgrade your springs to AFR part #8605, with higher spring pressures to reduce chances of valve float associated with rpm's 6200 or higher.

165cc SBF Street Cylinder Head 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 #7249 Bead Lock Intake Valve, 1.900" x 4.903" Overall Valve Length, Stud mount
AFR #7250 Bead Lock Exhaust Valve, 1.600" x 4.955" Overall Valve Length, Stud mount, 58cc chamber
AFR #7262 Bead Lock Intake Valve, 1.900" x 5.079" Overall Valve Length, Pedestal Mount
AFR #7264 Bead Lock Exhaust Valve, 1.600" x 5.100" Overall Valve Length, Pedestal Mount, 60cc chamber
AFR #8017 PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500
AFR #8514 Manley 7° Chrome Moly Retainers
AFR #9007 7° Bead Lock Valve Keepers
AFR #6410 3/8" Rocker Studs
AFR #6103 Adjustable 5/16" Guide Plates
AFR #6612 Viton Valve Seals
AFR #8042 Hardened Spring Cup
AFR #9059 Intake Valve Seats
AFR #9069 Exhaust Valve Seats
AFR #9051 Bronze Valve Guides
AFR #6226 Thermactor Air Injector

Specifications, Features, and Optional Supporting Components
65-70 ft. lbs with 7/16" stud Head Torque w/ Moly Lube
55 ft. lbs Rocker Stud Torque
25-30 ft lbs. Rocker Pedestal Torque
AFR #6828 Intake Port Gasket, 1.200" X 2.000" w/ 3/8" radius, Fel-Pro #1250
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, Fel-Pro #1011-1
AFR #6323 SBF 7/16" Head Bolt Kit, ARP #154-3701
AFR #6322 SBF 7/16" Bolt, Head Stud Kit, ARP #254-4401
AFR #6320 Head Bolt Washers, Manley
AFR #6207 Stud Girdle
RPM Performer Suggested Manifold
Performer Suggested Manifold
Autolite 3924 Spark Plug Starting Range
58cc Stud, 60cc Pedestal 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 (10cc Maximum Optional Mill)
.006" per cc Flat Mill (4cc Maximum Optional Mill)
 Model      Product Name   Price   Buy Now 
 1402*   AFR SBF 165cc ,Street Heads, 58cc chambers, Stud Mount, complete w/parts   AFR SBF 165cc ,Street Heads, 58cc chambers, Stud Mount, complete w/parts   $1,618.00  Buy Now 
 1472*   AFR SBF 165cc, Street Heads, 60cc chambers, Pedestal Mount, complete w/parts   AFR SBF 165cc, Street Heads, 60cc chambers, Pedestal Mount, complete w/parts   $1,618.00  Buy Now 
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Air Flow Research | 28611 W. Industry Drive | Valencia, CA 91355 | 661-257-8124

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