AFR 185cc SBF Outlaw Street Cylinder Head
The Ultimate Bolt-On Emission Legal Street/Strip Weapon
If you need the world´s finest street/strip small block Ford
head, 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 302-351 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. Available with optional nitrous or blower exhaust port featuring 70cc ultra high flowing exhaust ports. 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, 1.290 O.D. with higher spring pressures
to reduce chances of valve float associated with rpm´s 6200
or higher. 185cc Competition Package exhaust port is raised .125. (see footnotes here)
185cc SBF Aluminum Cylinder Head Flow Chart
Tested on 4.060 Bore
185cc SBF Aluminum Cylinder Head Competition Flow Chart w/ .125 raised exhaust port
Tested on 4.060 Bore
Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
3-angle Radiused Valve Job
AFR #7251
Bead Lock Intake Valve, 2.020" stud mount
AFR #7250
Bead Lock Exhaust Valve, 1.600" stud mount
AFR #7263
Bead Lock Intake Valve, 2.020 Pedestal
AFR #7264
Bead Lock Exhaust Valve, 1.600 Pedestal
AFR #8017
1.290" OD Hydraulic Dual Valve Spring, 135 lbs on seat,
Comp Pkg #8019
.600" maximum lift (upgrades available), #8019 1.270 OD
Specifications, Features, and Optional Supporting Components
100 ft. lbs with 1/2" stud
Head Torque
55-60 ft. lbs
Rocker Stud Torque
25-30 ft lbs.
Rocker Pedestal 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 #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 #6324
Head Bolt Bushings, 1/2"-7/16", Standard ARP
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)
Note: Milling head deck will affect flow numbers. |
