AFR's 185cc SB Ford Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head  is perfect for your 302 to 363 Cubic Inch operating below 6000 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads; such as ARP rockers studs, PAC Racing springs, Viton valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring cups and our one piece 8mm 21 4N Stainless Steel valves. They are available bare without any parts for the DIY. Sold as a single piece, 2 are required per engine.
 

Included Components
As Cast Combustion Chambers
As Cast Exhaust Ports
As Cast Intake Ports
3-angle Valve Job
8mm Bead Lock Intake Valve, 2.020" x 5.000" Overall Valve Length	AFR #7257
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length	AFR #7254
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available)	AFR #8017
7° Steel Retainers 1.245" O.D x .885" I.D x .655" I.D	AFR #8514
7° Bead Lock Valve Keepers	AFR #9007
ARP 3/8" Rocker Studs	AFR #6409
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .675" O.D x .513" I.D	AFR #6614
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D	AFR #8042

 

185cc Street Head Flow Chart
	.200	.300	.400	.500	.550	.600
Int	119	177	225	255	257	260
Exh	105	143	163	166	168	170

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	185cc
Intake Port Dimension	2.010" H x 1.070" W x 5/16 Radius
Intake Port Location	Stock
Exhaust Port Volume	64cc
Exhaust Port Dimension	1.370" H x 1.350" W
Exhaust Port Location	Stock
Combustion Chamber Size	64cc
Valve Angle	20°
Valve Spring Pocket Diameter	1.540" O.D
Max Valve Spring Pocket Machining	1.600" O.D
Deck Thickness	.325"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 54cc Max (from 64cc);
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.

Recommended Components:
Intake Port Gasket	AFR #6911
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket	AFR #6915
Head Gasket, 302/351W, Fel-Pro #1011-1	AFR #6808
SB Ford 1/2" Bolt Head Bolts, ARP #154-3603	AFR #6318
SB Ford 1/2" Bolt Head Studs, ARP #254-4503	AFR #6317
1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708	AFR #6319
Head Bolt Washers, Manley	AFR #6320
Suggested Manifold	AFR #4830
Spark Plug Starting Range	Autolite 3924

Our largest and highest flowing head for the small block ford is the best in-line head money can buy. Featuring 220cc intake runners, this package is recommended for race applications and radical "Pro-Street" builds. Available with 58cc or 72cc combustions chambers, you can further customize your setup with our various components upgrades and available machining options.

Included Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve 2.100" x 5.000" O.A.L.	AFR #7256
8mm Bead Lock Exhaust Valve 1.570" x 5.030" O.A.L.	AFR #7248
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400	AFR #8000
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D	AFR #8511
10° Bead Lock Keepers with lashcap recess	AFR #9009
ARP 7/16" Rocker Studs	AFR #6405
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .600" O.D x .495" I.D	AFR #6612
Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D	AFR #8048
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep	AFR #9059
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep	AFR #9069
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L	AFR #9051

220cc Street Head Flow Chart
	.200	.300	.400	.500	.600	.700	.800
Int	135	194	258	295	315	325	331
Exh	121	171	215	238	245	249	250

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.155", 3/4" radius plate exhaust, 1 7/8" curved pipe

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	220cc
Intake Port Dimension	2.265" H x 1.325" W x 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	70cc
Exhaust Port Dimension	1.445" H x 1.595" W
Exhaust Port Location	Raised .375"
Combustion Chamber Size	58cc or 72cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.580" O.D
Max Valve Spring Pocket Machining	1.580" O.D
Deck Thickness	.750"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 55cc Max (from 58cc); 69cc Max (from 72cc);
Angle Mill	.009" per 52cc Max (from 58cc); 66cc Max (from 72cc);
Minimum Cross Sectional Area	2.345 sq. in.
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.
Head Bolt Diameter	1/2"

Recommended Components:
Intake Port Gasket, Fel-Pro #1262R	AFR #6812
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket, Fel-Pro #1487	AFR #6839
Head Gasket, 302/351W, Fel-Pro #1011-1	AFR #6808
SB Ford 1/2" Bolt Head Bolt Kit, ARP #154-3603	AFR #6318
SB Ford 1/2" Bolt Head Stud Kit, ARP #254-4503	AFR #6317
1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708	AFR #6319
Head Bolt Washer Kit, Manley	AFR #6320
Stud Girdle	AFR #6207
Suggested Manifold	Super Vic or Vic Jr.
Spark Plug Starting Range	Autolite 3922 - Race Gas
Spark Plug Starting Range	Autolite 3924 - Pump Gas

AFR's 205cc "Competition" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and very agressive street/strip builds operating up to 7400 RPM. Maximum intake flow potential @0.750" lift is 331 CFM.

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve, 2.080" x 5.000" Overall Valve Length	AFR #7255
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length	AFR #7254
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 (upgrades available)	AFR #8000
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D	AFR #8511
10° Bead Lock Valve Keepers with lashcap recess	AFR #9009
ARP 7/16" Rocker Studs	AFR #6405
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .600" O.D x .495" I.D	AFR #6612
Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D	AFR #8048
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep	AFR #9059
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep	AFR #9069
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L	AFR #9051

205cc Street Head Flow Chart
	.200	.300	.400	.500	.550	.600	.700	.750
Int	139	199	251	285	297	308	317	320
Exh	121	170	206	219	227	230	232	234

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	205cc
Intake Port Dimension	2.115" H x 1.300" W x 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	70cc
Exhaust Port Dimension	1.400" H x 1.400" W
Exhaust Port Location	Raised .125"
Combustion Chamber Size	58cc or 72cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.580" O.D
Max Valve Spring Pocket Machining	1.625" O.D
Deck Thickness	.750"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill	.009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc);
Minimum Cross Sectional Area	2.165 sq. in.
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.
Head Bolt Diameter	1/2"

Recommended Components:
Intake Port Gasket, 1.200" X 2.000" w/ 3/8" radius, Fel-Pro #1262	AFR #6832
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket, Fel-Pro #1487	AFR #6839
Head Gasket, Fel-Pro #1011-1	AFR #6808
SB Ford 1/2" Bolt Head Bolt Kit, ARP #154-3603	AFR #6318
SB Ford 1/2" Bolt Head Stud Kit, ARP #254-4503	AFR #6317
1/2" Bolt - 7/16" Thread Head Bolts, ARP 254-3708	AFR #6319
Head Bolt Washer Kit, Manley	AFR #6320
Stud Girdle	AFR #6207
Suggested Manifold	Super Vic or Vic Jr.
Spark Plug Starting Range	Autolite 3922 - Race Gas
Spark Plug Starting Range	Autolite 3924 - Pump Gas

AFR's 185cc SB Ford Enforcer Cylinder heads feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. In addition, these heads utilize a 1.900” Intake valve and are compatible with OEM piston valve relief. This budget friendly head is perfect for your 302 to 363 Cubic Inch engine operating below 6000 RPM. They come fully assembled with the identical components found in our higher end CNC ported cylinder heads, such as ARP rockers studs, PAC Racing springs, Viton valve seals, AFR adjustable guide plates, machined bead valve locks (not stamped), hardened spring cups and our one-piece 8mm 21 4N Stainless Steel valves. They are available bare and without any parts for the DIY.
 

Included Components
As Cast Combustion Chambers
As Cast Exhaust Ports
As Cast Intake Ports
3-angle Valve Job
8mm Bead Lock Intake Valve, 1.900" x 5.000" Overall Valve Length	AFR #7246
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length	AFR #7254
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available)	AFR #8017
7° Steel Retainers 1.245" O.D x .885" I.D x .655" I.D	AFR #8514
7° Bead Lock Valve Keepers	AFR #9007
ARP 3/8" Rocker Studs	AFR #6409
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .675" O.D x .513" I.D	AFR #6614
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D	AFR #8042

 

185cc Street Head Flow Chart
	.200	.300	.400	.500	.550	.600
Int	123	175	208	232	242	251
Exh	105	143	163	166	168	170

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	185cc
Intake Port Dimension	2.010" H x 1.070" W x 5/16 Radius
Intake Port Location	Stock
Exhaust Port Volume	64cc
Exhaust Port Dimension	1.370" H x 1.350" W
Exhaust Port Location	Stock
Combustion Chamber Size	64cc
Valve Angle	20°
Valve Spring Pocket Diameter	1.540" O.D
Max Valve Spring Pocket Machining	1.600" O.D
Deck Thickness	.325"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 53cc Max (from 63cc);
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.

Recommended Components:
Intake Port Gasket	AFR #6911
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket	AFR #6915
Head Gasket, 302/351W, Fel-Pro #1011-1	AFR #6808
SB Ford 1/2" Bolt Head Bolts, ARP #154-3603	AFR #6318
SB Ford 1/2" Bolt Head Studs, ARP #254-4503	AFR #6317
1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708	AFR #6319
Head Bolt Washers, Manley	AFR #6320
Suggested Manifold	AFR #4830
Spark Plug Starting Range	Autolite 3924

 

Our 195cc Competition cylinder heads feature 100% CNC machined intake ports, exhaust ports and combustion chambers. Manufactured in A356 aluminum and assembled with high quality components. Not compatible with OEM pistons. Component upgrades and different machining options are available to suit your specific build. AFR heads are available bare (without parts), call our tech line for details.

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve, 2.050" x 4.903" Overall Valve Length, Stud mount	AFR #7252
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" Overall Valve Length	AFR #7250
PAC Racing Spring 1.270" OD Hydraulic Roller Dual Valve Spring, 155 lbs. on seat, .650" maximum lift, Max RPM 7000-7200	AFR #8019
7° Chrome Moly Retainers	AFR #8514
7° Bead Lock Valve Keepers	AFR #9007
ARP 7/16" Rocker Studs	AFR #6405
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals	AFR #6612
Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D	AFR #8042
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep	AFR #9059
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep	AFR #9069
Bronze Valve Guides	AFR #9051
Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)	AFR #6226

195cc Competition Head Flow Chart
	.200	.300	.400	.500	.550	.600	.650
Int	148	201	255	283	292	294	298
Exh	126	171	207	222	227	231	235

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe
 

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	195cc
Intake Port Dimension	2.060" H x 1.220" W 11/32 Radius
Intake Port Location	Stock
Exhaust Port Volume	70cc
Exhaust Port Dimension	1.405" H x 1.400" W
Exhaust Port Location	Raised .125"
Combustion Chamber Size	58cc or 72cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.460" O.D
Max Valve Spring Pocket Machining	1.625" O.D
Deck Thickness	.750"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill	.009" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Minimum Cross Sectional Area	2.075 sq. in.
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
CARB Status:This product is not legal for sale or use on emission-controlled vehicles and intended for dedicated race vehicles only.
Head Bolt Diameter	1/2"

Recommended Components:
Intake Port Gasket, 1.200" X 2.000" w/ 3/8" radius, Fel-Pro #1262	AFR #6832
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket, Fel-Pro #1487	AFR #6839
Head Gasket, Fel-Pro #1011-1	AFR #6808
SB Ford 1/2" Bolt Head Bolt Kit, ARP #154-3603	AFR #6318
SB Ford 1/2" Bolt Head Stud Kit, ARP #254-4503	AFR #6317
1/2" Bolt - 7/16" Thread Head Bolts	AFR #6319
Head Bolt Washer Kit, Manley	AFR #6320
Stud Girdle	AFR #6207
Suggested Manifold	RPM Performer or Vic Jr.
Spark Plug Starting Range	Autolite 3924

AFR's 185cc SB Ford "Street" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for engines from 302-393 cubic inches, operating up to 6000-6500 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3. Not compatible with OEM pistons.
 

Included Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve 2.020" x 4.900" O.A.L.	AFR #7251
8mm Bead Lock Exhaust Valve 1.600" x 4.950" O.A.L.	AFR #7250
Pedastal 8mm Bead Lock Intake Valve 2.020" x 5.080" O.A.L	AFR #7263
Pedastal 8mm Bead Lock Exhaust Valve 1.600" x 5.100" O.A.L	AFR #7264
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500, less than 235* duration, upgraded spring #8019 recommended for higher RPM & larger cams	AFR #8017
7° Manley Steel Retainers 1.245" O.D x .885" I.D x .655" I.D	AFR #8514
7° Bead Lock Valve Keepers	AFR #9007
ARP 3/8" Rocker Studs	AFR #6409
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .600" O.D x .495" I.D	AFR #6612
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D	AFR #8042
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep	AFR #9059
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep	AFR #9069
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L	AFR #9051
Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)	AFR #6226

185cc Street Head Flow Chart
	.200	.300	.400	.500	.550	.600
Int	142	195	247	276	285	289
Exh	118	164	200	210	213	215

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

 

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	185cc
Intake Port Dimension	2.045" H x 1.205" W x 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	70cc
Exhaust Port Dimension	1.355" H x 1.360" W
Exhaust Port Location	Stock
Combustion Chamber Size	58cc or 72cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.460" O.D
Max Valve Spring Pocket Machining	1.625" O.D
Deck Thickness	.750"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill	.009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc)
Note:Angle mills might require a .120" Thick intake gasket.
Minimum Cross Sectional Area	2.025 sq. in.
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
Head Bolt Diameter	1/2"
CARB E.O# Part #'s 1422 & 1492	D-250-3

Recommended Components:
Intake Port Gasket, Fel-Pro #1262	AFR #6832
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket, Fel-Pro #1415	AFR #6837
Head Gasket, 302/351W, Fel-Pro #1011-1	AFR #6808
SB Ford 1/2" Bolt Head Bolts, ARP #154-3603	AFR #6318
SB Ford 1/2" Bolt Head Studs, ARP #254-4503	AFR #6317
1/2" Bolt - 7/16" Thread Head Bolts, 289/302W: ARP 254-3708	AFR #6319
Head Bolt Washers, Manley	AFR #6320
Stud Girdle	AFR #6207
Suggested Manifold	Performer or Performer RPM
Spark Plug Starting Range	Autolite 3924

 

AFR's 165cc "Street" cylinder heads are the preferred choice over re-worked factory heads. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout, in addition these are the only AFR heads that are compatible with the OEM piston valve relief. Recommended for street, towing, or street/strip engines with displacements up to 351 cubic inches, operating up to 6000 RPM. Legal for 1995 and older emissions controlled vehicles under CARB EO #D-250-3.
 

Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job
8mm Bead Lock Intake Valve, 1.900" x 4.900" O.A.L	AFR #7249
8mm Bead Lock Exhaust Valve, 1.600" x 4.950" O.A.L	AFR #7250
Pedestal 8mm Bead Lock Intake Valve, 1.900" x 5.080" O.A.L	AFR #7262
Pedestal 8mm Bead Lock Exhaust Valve, 1.600" x 5.100" O.A.L	AFR #7264
PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500, less than 235* duration, upgraded spring #8019 recommended for higher RPM & larger cams	AFR #8017
7° Steel Retainers 1.245" O.D x .885" I.D x .655" I.D	AFR #8514
7° Bead Lock Valve Keepers	AFR #9007
ARP 3/8" Rocker Studs	AFR #6409
Adjustable 5/16" Guide Plates	AFR #6103
Viton Valve Seals .600" O.D x .495" I.D	AFR #6612
Hardened Valve Spring O.D Locator 1.380" O.D x .570" I.D	AFR #8042
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep	AFR #9060
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep	AFR #9069
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L	AFR #9051
Thermactor Air Injector Reducer Bushing (5/8"-11 x 7/16"-14)	AFR #6226

 

165cc Street Head Flow Chart
	.200	.300	.400	.500	.550	.600
Int	135	200	240	251	255	260
Exh	122	163	192	208	212	215

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe

 

Specifications & Features:
Material	A356 Aluminum
Intake Port Volume	165cc
Intake Port Dimension	1.975" H x 1.125" W x 3/8 Radius
Intake Port Location	Stock
Exhaust Port Volume	68cc
Exhaust Port Dimension	1.355" H x 1.360" W
Exhaust Port Location	Stock
Combustion Chamber Size	58cc
Valve Cover Bolt Pattern	Perimeter Bolt
Valve Angle	20°
Valve Spring Pocket Diameter	1.460" O.D
Max Valve Spring Pocket Machining	1.625" O.D
Deck Thickness	.750"
Minimum Bore Diameter	4.000"
Flat Mill	.006" per cc 54cc Maximum
Angle Mill	.009" per cc 48cc Maximum
Note:Angle mills might require a .120" Thick intake gasket.
Minimum Cross Sectional Area	1.935 sq. in.
Spark Plug Dimensions	14mm x .750" w/Gasket Seat
CARB EO# Part #'s 1402 & 1472	D-250-3
Head Bolt Diameter 1402 & 1472	1/2"
Head Bolt Diameter 1399	1/2"

Recommended Components:
Intake Port Gasket	AFR #6911
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket	AFR #6915
Head Gasket, 302/351 Windsor, Fel-Pro #1011-1	AFR #6808
SBF 7/16" Head Bolt Kit, ARP #154-3701	AFR #6323
SBF 7/16" Bolt, Head Stud Kit, ARP #254-4401	AFR #6322
1/2" Bolt - 7/16" Thread Head Bolts, ARP 254-3708	AFR #6319
Head Bolt Washer Kit, Manley	AFR #6320
Stud Girdle (AFR Specific)	AFR #6207
Suggested Manifold	Performer or Performer RPM
Spark Plug Starting Range	Autolite 3924