Bullitt CNC
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
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
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
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
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
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
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