Cylinder Heads
Our 280cc feature partially CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout with standard exhaust port locations. Recommended for street, towing, or street/strip engines with displacements up to 477 cubic inches, operating up to 6200 RPM. Please note, due to AFR's valve angle and location, custom pistons or notching existing pistons will be required.
| Included Components | |
| 50% CNC Ported Combustion Chambers | |
| 80% CNC Bowl Blend Intake & Exhaust | |
|
Competition 5-Angle Valve Job |
|
| 11/32" Bead Lock Intake Valve 2.250" x 5.250" O.A.L | |
| 11/32" Bead Lock Tulip Exhaust Valve 1.760" x 5.050" O.A.L | |
| PAC Racing Springs 1.550" OD Solid Roller Dual Valve Drag Race Spring 220 lbs. on seat, .680" maximum lift Max RPM 7200-7400 (upgrades available) | |
| PAC Racing #1940 1.550" OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725" maximum lift Max RPM 6500-6700 | |
| 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
| 10° 11/32" Beadlock Valve Keepers with lashcap recess | |
| ARP 7/16" Rocker Studs | |
| Adjustable 3/8" Guide Plates | |
| 11/32" Viton Valve Seals | |
| Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D | |
| Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep | |
| Exhaust Valve Seat 1.900" O.D. x 1.400" I.D. x .375" Deep | |
| 11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L | |
| 280cc Street Head Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .600 | ||
| Int | 169 | 244 | 301 | 349 | 383 | |
| Exh | 125 | 160 | 205 | 238 | 255 | |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.380", 3/4" radius plate exhaust, 2 1/8" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
280cc
|
| Intake Port Dimension |
2.230" H x 1.815" W x .525 Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
132cc
|
| Exhaust Port Dimension |
1.830"H x 1.600"W
|
| Exhaust Port Location |
Stock
|
| Combustion Chamber Size |
75cc or 85cc
|
| Valve Cover Bolt Pattern |
Perimeter Bolt
|
| Valve Angle |
14° Intake/8° Exhaust
|
| Valve Cant |
4.04° Intake/4.12° Exhaust
|
| Valve Spring Pocket Diameter |
1.750" O.D
|
| Max Valve Spring Pocket Machining |
1.750" O.D
|
| Deck Thickness |
.750"
|
| Minimum Bore Diameter |
4.360"
|
| Flat Mill |
.007" per cc
|
| Angle Mill |
.010" per cc
|
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Minimum Cross Sectional Area |
3.225 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. |
|
| Recommended Components: | |
| Intake Port Gasket | |
| 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 #1420 | |
| Head Gasket, 4.500 Bore, Fel-Pro #1018 | |
| Head Bolts, ARP #255-3701 | |
| Head Studs, ARP# 155-4203 12 Point | |
| Head Bolt Washers, Manley | |
| Stud Girdle | |
| 1.75 Shaft Mount Rocker Arms T&D | |
| Suggested Manifold | |
| Suggested Manifold | |
| Spark Plug Starting Range |
Autolite 3922 - Race Gas
|
| Spark Plug Starting Range |
Autolite 3924 - Pump Gas
|
The 315cc heads are AFR's largest and best flowing BBF heads! They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings, and high quality components throughout with .250 or .625 raised exhaust port locations. These heads are best suited for large displacement high RPM Big Block Ford racing engines or radical “Pro Street” style builds. Please note, due to AFR's valve angle and location, custom pistons or notching existing pistons will be required.
| Included Components | |
| 100% CNC Ported Combustion Chambers | |
| 100% CNC Ported Intake & Exhaust | |
|
Competition 5-Angle Valve Job |
|
| 11/32" Bead Lock Intake Valve 2.300" x 5.250" O.A.L | |
| 11/32" Bead Lock Tulip Exhaust Valve 1.760" x 5.050" O.A.L | |
| PAC Racing #1224 1.625" OD Solid Roller Dual Valve Spring 275 lbs. on seat, .850" maximum lift, Max RPM 7400-7600 Uses #8518 Steel Retainer & #8046 Spring Cup (upgrades available) | |
| 10° Manley Steel Retainers 1.500" O.D x 1.168" I.D x .844" I.D | |
| PAC Racing #1940 1.550" OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725" maximum lift Max RPM 6500-6700; Uses #8511 Steel Retainer | |
| 10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
| 10° 11/32" Beadlock Valve Keepers with lashcap recess | |
| ARP 7/16" Rocker Studs | |
| Adjustable 3/8" Guide Plates | |
| 11/32" Viton Valve Seals | |
| Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D | |
| Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep | |
| Exhaust Valve Seat 1.900" O.D. x 1.400" I.D. x .375" Deep | |
| 11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L | |
| 315cc Street Head Flow Chart | ||||||||
| .200 | .300 | .400 | .500 | .600 | .650 | .700 | .750 | |
| Int | 162 | 244 | 305 | 355 | 394 | 405 | 414 | 419 |
| Exh | 124 | 166 | 212 | 248 | 267 | 272 | 276 | 276 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.380", 3/4" radius plate exhaust, 2 1/8" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
315cc
|
| Intake Port Dimension |
2.275" H x 1.850" W x .575 Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
142cc
|
| Exhaust Port Dimension |
1.850"H x 1.600"W
|
| Exhaust Port Location |
.250" Raised
|
| Combustion Chamber Size |
75cc or 85cc
|
| Valve Cover Bolt Pattern |
Perimeter Bolt
|
| Valve Angle |
14° Intake/8° Exhaust
|
| Valve Cant |
4.04° Intake/4.12° Exhaust
|
| Valve Spring Pocket Diameter |
1.750" O.D
|
| Max Valve Spring Pocket Machining |
1.750" O.D
|
| Deck Thickness |
.750"
|
| Minimum Bore Diameter |
4.360"
|
| Flat Mill |
.007" per cc
|
| Angle Mill |
.010" per cc
|
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Minimum Cross Sectional Area |
3.440 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. |
|
| Recommended Components: | |
| Intake Port Gasket | |
| 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 #1420 | |
| Head Gasket, 4.500 Bore, Fel-Pro #1018 | |
| Head Bolts, ARP #255-3701 | |
| Head Studs, ARP# 155-4203 12 Point | |
| Head Bolt Washers, Manley | |
| Stud Girdle | |
| 1.75 Shaft Mount Rocker Arms T&D | |
| Suggested Manifold | |
| Suggested Manifold | |
| Spark Plug Starting Range |
Autolite 3922 - Race Gas
|
| Spark Plug Starting Range |
Autolite 3924 - Pump Gas
|
AFR's 295cc heads feature 100% CNC ported intake, exhaust chambers, A356 aluminum castings and high quality components throughout with standard or .250 raised exhaust port locations. Recommended for more aggressive or street/strip or racing builds with displacements up to 512 cubic inches, operating up to 6500 RPM.Please note, due to AFR's valve angle and location, custom pistons or notching existing pistons will be required.
| Included Components | |
| 100% CNC Ported Combustion Chambers | |
| 100% CNC Ported Intake & Exhaust | |
|
Competition 5-Angle Valve Job |
|
| 11/32" Bead Lock Intake Valve 2.250" x 5.250" O.A.L | |
| 11/32" Bead Lock Tulip Exhaust Valve 1.760" x 5.050" O.A.L | |
| PAC Racing #1224 1.625" OD Solid Roller Dual Valve Spring 275 lbs. on seat, .850" maximum lift, Max RPM 7400-7600 Uses #8518 Steel Retainer & #8046 Spring Cup (upgrades available) | |
| 10° Steel Retainers 1.500" O.D x 1.168" I.D x .844" I.D | |
| PAC Racing #1940 1.550" OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725" maximum lift Max RPM 6500-6700; Uses #8511 Steel Retainer | |
| 10° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D | |
| 10° 11/32" Beadlock Valve Keepers with lashcap recess | |
| ARP 7/16" Rocker Studs | |
| Adjustable 3/8" Guide Plates | |
| 11/32" Viton Valve Seals | |
| Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D | |
| Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep | |
| Exhaust Valve Seat 1.900" O.D. x 1.400" I.D. x .375" Deep | |
| 11/32" Exhaust Bronze Valve Guides .502" O.D x 2.25" O.A.L | |
| 295cc Stock Exhaust BBF Flow Chart | |||||||
| .200 | .300 | .400 | .500 | .600 | .650 | .700 | |
| Int | 165 | 243 | 304 | 352 | 390 | 394 | 402 |
| Exh | 125 | 160 | 205 | 238 | 255 | 261 | 264 |
| 295cc .250 Raised BBF Flow Chart | |||||||
| .200 | .300 | .400 | .500 | .600 | .650 | .700 | |
| Int | 165 | 243 | 304 | 352 | 390 | 394 | 402 |
| Exh | 124 | 166 | 212 | 248 | 267 | 272 | 276 |
Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.380", 3/4" radius plate exhaust, 2 1/8" curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
295cc
|
| Intake Port Dimension |
2.275" H x 1.850" W x .575 Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
142cc
|
| Exhaust Port Dimension |
1.850"H x 1.600"W
|
| Exhaust Port Location |
Stock or .250" Raised
|
| Combustion Chamber Size |
75cc or 85cc
|
| Valve Cover Bolt Pattern |
Perimeter Bolt
|
| Valve Angle |
14° Intake/8° Exhaust
|
| Valve Cant |
4.04° Intake/4.12° Exhaust
|
| Valve Spring Pocket Diameter |
1.750" O.D
|
| Max Valve Spring Pocket Machining |
1.750" O.D
|
| Deck Thickness |
.750"
|
| Minimum Bore Diameter |
4.360"
|
| Flat Mill |
.007" per cc
|
| Angle Mill |
.010" per cc
|
| Note:Angle mills might require a .120" Thick intake gasket. | |
| Minimum Cross Sectional Area |
3.275 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. |
|
| Recommended Components: | |
| Intake Port Gasket | |
| 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 #1420 | |
| Head Gasket, 4.500 Bore, Fel-Pro #1018 | |
| Head Bolts, ARP #255-3701 | |
| Head Studs, ARP# 155-4203 12 Point | |
| Head Bolt Washers, Manley | |
| Stud Girdle | |
| 1.75 Shaft Mount Rocker Arms T&D | |
| Suggested Manifold | |
| Suggested Manifold | |
| Spark Plug Starting Range |
Autolite 3922 - Race Gas
|
| Spark Plug Starting Range |
Autolite 3924 - Pump Gas
|
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