185cc SBF "Renegade" 20° Street Head

The Ultimate Bolt-On Emission Legal Street/Strip Weapon

Our NEW 185cc "Renegade" Ford is a clean sheet ground up redesign of our already formidable and proven 20° Ford Heads. These new 185cc flow drastically more, averaging a 17 CFM increase from .200-.600 lift, than our previous best 185cc. If you're looking fora decisive advantage for your small block Ford street/strip car, check out AFR's all new 185cc intake port emissions legal (CARB EO #250-3) performance cylinder heads. With lightweight 8mm 2.020 intake valves, 1.600 exhaust valves, combustion chamber volumes of 58cc or 72cc, and 70cc exhaust ports, AFR's new 185cc Ford cylinder heads are designed for 302-367 cid engines operating from 1500 rpm to 6500 rpm. A 3/4" thick head deck makes the AFR head ideal for nitrous or blower applications. Will not accept rail rocker arms. Hardened pushrods required with cylinder heads #1420 and #1422. High flow 2.020 valves might require aftermarket pistons notched for valve clearance. Note: 1986 5.0L must have pistons notched for clearance.

Note:

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.(see footnotes here) for additional information.

185cc SBF Aluminum Cylinder Head Flow Chart

Tested on 4.060 Bore

185cc SBF Aluminum 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 #7251 Bead Lock Intake Valve, 2.020" 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 #7263 Bead Lock Intake Valve, 2.020" 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 #9058 Intake Valve Seats
AFR #9069 Exhaust Valve Seats
AFR #9051 Bronze Valve Guides
AFR #6226 Thermactor Air Injector



Specifications, Features, and Optional Supporting Components
100 ft. lbs with 1/2" stud Head Torque w/ Moly Lube
55 ft. lbs Rocker Stud Torque
25-30 ft lbs. Rocker Pedestal Torque
AFR #6832 Intake Port Gasket, 1.280" x 2.100" 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 #6837 Exhaust Port Gasket, Fel-Pro #1415
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 Washer Kit, Manley
AFR #6324 Head Bolt Bushings, 1/2"-7/16", Standard ARP
AFR #6207 Stud Girdle
RPM Performer Suggested Manifold
Victor Jr. Suggested Manifold
Autolite 3924 Spark Plug Starting Range
58cc, 60cc(pedestal rockers), 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 (10cc Maximum Optional Mill)
.006" per cc Flat Mill (4cc Maximum Optional Mill)
 Model      Product Name   Price   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   $1,618.00  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   $1,618.00  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   $1,618.00  Buy Now 
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Air Flow Research | 28611 W. Industry Drive | Valencia, CA 91355 | 661-257-8124

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