AFR 185cc Emission Legal
SBF Outlaw Street Cylinder Head
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The Ultimate Bolt-On Emission Legal Street/Strip Weapon
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|  If
you need the world’s finest high perofmance street/strip small block Ford
head, check out AFR’s all new 185cc intake port emissions
legal (CARB EO #250-3) cylinder heads. With lightweight 8mm 2.020 intake valves,
1.600” exhaust valves, combustion chamber volumes of 58cc
or 72cc, and 68cc exhaust ports, AFR’s new 185cc Ford cylinder head
is designed for 302-351 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 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 #8047, 1.290 O.D. with higher spring pressures
to reduce chances of valve float associated with rpm’s 6200
or higher. (see footnotes here) |
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185cc SBF Aluminum Cylinder Head Street Flow Chart
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185cc SBF Aluminum Cylinder Head Competition Flow Chart w/ .125 raised exhaust port
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185cc Emission Legal SBF Street Cylinder Head Part Numbers
CNC Ported Pairs of Heads Complete With Parts or
Ready to Install
CNC Street Ported Heads
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Description
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Part Number
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| 185cc Street Heads, Stud, 58cc |
1422* |
| 185cc Street Heads, Pedestal, 60cc |
1492* |
| 185cc Street Heads, Stud, 72cc |
1420* |
CNC Ported Competition Packages
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Description
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Part Number
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| 185cc Race Heads, Stud, 58cc |
1406 |
| 185cc Race Heads, Stud, 72cc |
1408 |
Stage 1- Bare Heads No Porting or
Parts
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Description
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Part Number
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| 170cc Street Heads, Stud, 55cc |
142* |
| 170cc Street Heads, Pedestal, 55cc |
149* |
Part #1420 & #1387 Small Block Ford 185cc is no longer 61cc. It is now 72cc. Buyer be alert to what your dealer has in stock!!!
Stage 1 Bare Heads (no parts or porting) are available.
*Only models with heat riser (marked by an asterisk)
are emissions legal, all others are not legal for sale or use on
pollution controlled motor vehicles in the United States.
| Basic Package Components |
Part # |
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 3-angle Valve Job |
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| Intake Valve, 2.020" stud mount |
AFR #7251 |
| Exhaust Valve, 1.600" stud mount, 58cc or 68cc |
AFR #7250 |
| Intake Valve, 2.020 Pedestal |
AFR #7206 |
| Exhaust Valve, 1.600 Pedestal |
AFR#7226 |
1.290" OD Hydraulic Dual Valve Spring, 135 lbs on seat,
.600" maximum lift(upgrades available) |
AFR #8017
Comp Pkg #8019 |
| 7° Chrome Moly Retainers |
AFR #8514 |
| 7° Valve Locks |
AFR #9007 |
| 3/8" Rocker Studs |
AFR #6401 |
| 5/16" Guide Plates |
AFR #6107 |
| Valve Seals |
AFR #6612 |
| Hardened Shims |
AFR #8042 |
| Intake Vavle Seats |
AFR #9058 |
| Exhaust Vavle Seats |
AFR #9069 |
| Bronze Valve Guides |
AFR #9051 |
| Thermactor Air Injector |
AFR #6226 |
Special orders available upon request.
| Specifications, Features, and Optional Supporting Components |
| Head Torque |
100 ft. lbs with 1/2" stud |
| Rocker Stud Torque |
55-60 ft. lbs |
| Rocker Pedestal Torque |
25-30 ft lbs. |
| Intake Port Gasket, 1.250" x 2.050" w/ 3/8" radius |
AFR #6832 or Fel-Pro #1262 |
| Exhaust Port Gasket |
Fel-Pro #1415, AFR #6837 |
| Head Gasket |
Fel-Pro #1011-1, AFR #6808 |
| Head Bolts and Studs |
Standard ARP, AFR #6318 & #6317 |
| Head Bolt Washers |
Manley, AFR #6320 |
| Head Bolt Bushings, 1/2"-7/16" |
Standard ARP, AFR #6324 |
| Stud Girdle |
AFR #6207 |
| Suggested Manifold |
RPM Performer, Victor Jr. |
| Spark Plug Starting Range |
Autolite 3924 |
| Combustion Chambers |
58cc, 60cc, or 68cc |
| Spring Pocket can be cut to 1.625, no deeper |
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| Valve Spacing |
Standard |
| Rocker Arms |
Standard, will not accept rail rocker arms |
| Valve Angle |
Standard |
| Angle Mill (10cc Maximum Optional Mill) |
.008" per cc |
| Flat Mill (4cc Maximum Optional Mill) |
.006" per cc |
Important: Do not port match you intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads.
Note: Milling head deck will affect flow numbers.
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