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AFR Cylinder Heads
Small Block Ford 185cc runnerStreet/Strip Cylinder Heads
with current pricing

AFR 185cc Aluminum Performance 20° Cylinder Heads-

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afr cylinder head

*--click here to see cylinder head listings and pricing--
*--If you’re looking for a 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) cylinder heads--
*--new 185cc flow drastically more, averaging a 17 CFM increase from .200-.600 lift than our previous best 185cc--
*--With lightweight 8mm 2.020 intake valves, 1.600 exhaust valves, combustion chamber volumes of 58cc,60cc or 72cc--AFR’s new 185cc Ford head is designed for 302-367 cid engines operating from 1500 rpm to 6500 rpm--
*--see basic parts list for the included parts and some suggestions on manifolds and gaskets--
*--A 3/4” thick head deck makes the AFR head ideal for nitrous or blower applications--great tech help @ www.airflowresearch.com--
Note:High flow 2.020 valves might require aftermarket pistons notched for valve clearance and 1986 5.0L must have pistons notched for clearance --AFR Cylinder Heads will not accept rail type rocker arms--Hardened push rods required on all rocker stud applications due to the hardened guide plate being used--

If you need assistance in selecting the best AFR cylinder head for your application, you may want to e-mail support@dfperformance.com a description of your combination or call 856-767-4095 or 856-767-7740, and we'll see if we can help out.

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FREE ground SHIPPING inside the continental USA on purchases over $2900.00--allow about 2-3 weeks for Cylinder Head orders to ship--
check out AFR SBF Cylinder Head Options to add a few items you may need--
NOTE: all part #'s listed below that are followed by an asterisk(*) are street emmision legal, having provisions for an EGR and air pump holes.

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SBF 185cc runner go to
Flow Charts
go to
SBF Head Options
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afr cylinder headAFR SBF 185cc Cylinder Head
has single exhaust bolt pattern (pictured at left) with standard 2” spacing--
perfect for the 302-367cid engines operating from 1500rpm to 6500rpm--
  see basic parts list for the parts included in the head assembly and some suggestions on manifolds and gaskets--- 
NOTE 1: If you are going over 6200RPM, AFR suggests you upgrade your springs to AFR upgrade #8605--1.270 O.D.-see    SBF Cyl Head Options for spring upgrades-
cc stud mount
or pedestal
part # v/dia. runner
cc
spring retainer seat pressure open pressure max. lift price/pair buy
58
cc
3/8 stud 1385 2.02/1.600 185 Bare heads have full cnc port/comp valve job-58cc $1362.85
1388 2.02/1.600 185 1.290 steel 135 350lbs .600 $1593.71
1423* 2.02/1.600 185 Bare heads have full cnc port/comp valve job-58cc $1362.85
1422* 2.02/1.600 185 1.290 steel 135 350lbs .600 $1593.71
72
cc
3/8 stud 1386 2.02/1.600 185 Bare heads have full cnc port/comp valve job-72cc $1362.85
1387 2.02/1.600 185 1.290 steel 135 350lbs .600 $1593.71
1421* 2.02/1.600 185 Bare heads have full cnc port/comp valve job-72cc $1362.85
1420* 2.02/1.600 185 1.290 steel 135 350lbs .600 $1593.71
60
cc
pedestal 1493* 2.02/1.600 185 Bare heads have full cnc port/comp valve job-60cc $1362.85
1492* 2.02/1.600 185 1.290 steel 135 350lbs .600 $1593.71
NOTE: all part #'s followed by an asterisk(*) are street emmision legal, having provisions for an EGR and air pump holes.
go to
SBF 185cc
Flow Charts go to
SBF Head Options
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AFR 185cc Renegade Street Head-tested on 4.06 bore Cylinder Head Flow Chart cfm @28" H2O
valve size .200 .300 .400 .500 .550 .600 ---
2.020 int. 142 200 265 285 295 297 ---
1.600 exh. 118 164 200 210 213 215 ---
the AFR SBF Cylinder Head Options listed below
may only be ordered along with a complete set of AFR Cylinder Heads--
--keep in mind, free shipping for purchases totaling $2900.00 or more for USA zipcodes--
Item description price buy
rocker stud --AFR upgrade #6411-upgrade 3/8 rocker stud to 7/16 ARP 234-7206 for maximum durabilty and strength $41.00
valve spring --AFR #8605 valve spring option uses improved valve spring #8019(1.270 OD) to replace #8017 (1.290OD) for over 6200RPM operation w/155lbs seat-430lbs open pressure w/.650 max. lift (check with your cam manufacture for necessary spring pressures) $72.75
valve spring --AFR #8603 valve spring option trades the 8017 spring (1.290-OD) for the valve spring #8016, that is 1.550 diameter, 140 lbs seat and 375 lbs open at .525 lift with a max lift of .600 (check with your cam manufacture for necessary spring pressures) $87.30
titanium retainer --AFR upgrade #8600-Titanium Retainers installed in place of the steel retainers that are normally supplied $124.16
titanium valves --AFR upgrade #7511-inconel exhaust valves replace the stainless valves that are normally supplied with the heads-used in high heat situations such as forced induction or nitrous $170.72
comp cams ultra pro magnum rocker --Comp Cams ULTRA Pro Magnum Roller Rocker-choice of 1.6 ratio for 3/8 or 7/16 rocker stud-"Lifetime Guarantee" so strong that the body is guaranteed for life against breakage and unlike alum. rockers, rockers can be rebuilt by replacing the trunion, roller tip, and bearings thru Comp Cams-

the AFR SBF Cylinder Head Basic Package Components are listed below
and a few specifications and suggestions for Supporting Components--
NOTE: All AFR 185cc have 1/2" head bolt holes, so if the block you are using has 7/16" threads for the head bolt, you will need a head bolt/stud kit that contains the 1/2"-7/16" reducer bushing-see head bolts just below
parts incl. w/Heads part # some suggestions
Intake Valve 2.02x4.903 Oal #7251 Cyl Head torque w/moly--70lbs(7/16")
Exhaust Valve 1.600x4.955 Oal #7250 Cyl Head torque w/moly--100lbs(1/2")
Pedestal Intake Valve 2.02x5.079 Oal #7263 Rocker stud Torque--------55lbs
Pedestal Exhaust Valve 1.600x5.100 Oal #7264 Rocker Pedestal torque---25-30lbs
165cc Hyd Roller Spring-1.290 135/350lbs AFR #8017 Int Gasket(1.280x2.00)--FP1262/AFR6832
Manley 7° Chrome Moly Retainer 8514 Exh Gasket----------AFR#6837 or FP#1415
Bead Lock 7° valve keepers AFR#9007 7/16" Head "Bolts"
--ARP#154-3601(6pt) or #154-3701(12pt)--
7/16" Head bolts with 1/2"-7/16" Bushing
--ARP #154-3605(6pt)or #154-3705(12pt)--
Adjustable Guide Plates-5/16 #6103 7/16" Head "Stud" kit
--ARP#154-4001(6pt) or #254-4401(12pt)--
7/16" Head Stud kit with 1/2"-7/16" Bushing
--ARP#154-4005(6pt) or #154-4205(12pt)--
Viton Valve Seals #6612 1/2" Head "Bolts" --ARP#154-3603(6pt)
Hardened Spring Cup #8042 (Int and Exh) 1/2" Head "Stud" kit
--ARP#154-4003(6pt) or #154-4203(12pt)
Intake Valve Seats #9058 Manifolds------RPM Performer,Vic Jr
Exhaust Valve Seats #9069 Spark Plugs-----Autolite 3924
Bronze Valve Guides-(Int and Exh) #9051 Stud Girdle----------AFR#6207
Intake Rocker Stud-3/8 #6410 valve spring pockets can be cut to 1.625, no deeper
Exhaust Rocker Stud-3/8 #6410 Valve Spacing/valve angle------std/std
Thermactor Air Injector #6226 Rocker Arms ----No rail type rockers