CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
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.
| 280cc Aluminum BBF Cylinder Heads | ||
|---|---|---|
| Part # | Description | Combustion Chamber |
| 3802 | CNC bowl blend, Partially CNC Chamber w/ Hydraulic Roller Springs |
75cc |
| 3803 | CNC bowl blend, Partially CNC Chamber w/ Solid Roller Springs |
75cc |
| 3805 | CNC bowl blend, Partially CNC Chambers w/ Hydraulic Roller Springs |
85cc |
| 3806 | CNC bowl blend, Partially CNC Chambers w/ Solid Roller Springs |
85cc |
| 280cc Street Head Flow Chart | ||||||
| .200 | .300 | .400 | .500 | .600 | ||
| Int | 169 | 244 | 309 | 354 | 385 | |
| Exh | 130 | 174 | 214 | 238 | 254 | |
Test conducted at 28" of water (pressure) on Superflow 600
Bore Size: 4.380", 3/4" radius plate exhaust, 2 1/8" curved pipe
| 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 |
7551
|
| 11/32" Bead Lock Tulip Exhaust Valve 1.760" x 5.050" O.A.L |
7553
|
| 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) |
8000
|
| PAC Racing #1940 1.550" OD Hydraulic Roller Dual Valve Spring 175 lbs. on seat, .725" maximum lift Max RPM 6500-6700 |
8002
|
| 10° Manley Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D |
8511
|
| 10° 11/32" Beadlock Valve Keepers with lashcap recess |
9010
|
| ARP 7/16" Rocker Studs |
6407
|
| Adjustable 3/8" Guide Plates |
6108
|
| 11/32" Viton Valve Seals |
AFR #6610
|
| Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D |
8048
|
| Intake Valve Seats 2.450" O.D x 1.950" I.D x .375" Deep |
9065
|
| Hardened Valve Spring I.D Locator 1.550" O.D x .780" I.D |
9066
|
| 11/32" Bronze Valve Guides .502" O.D x 2.250" O.A.L |
9048
|
| Recommended Components: | |
| Intake Port Gasket |
6893
|
| Important: Do not port match your intake manifold to Fel-Pro gasket as it does not precisely fit AFR heads. | |
| Exhaust Port Gasket, Fel-Pro #1420 |
6891
|
| Head Gasket, 4.500 Bore, Fel-Pro #1018 |
6892
|
| Head Bolts, ARP #155-3603 |
6340
|
| Head Studs, ARP# 155-4203 12 Point |
6341
|
| Head Bolt Washers, Manley |
6320
|
| Stud Girdle |
6209
|
| 1.75 Shaft Mount Rocker Arms T&D |
6067
|
| Suggested Manifold |
AFR Single Plane, AFR# 4992 or 4993
|
| Spark Plug Starting Range |
Autolite 3932
|
| 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 Spring Pocket Diameter |
1.750" O.D
|
| Max Valve Spring Pocket Machining |
1.750" O.D
|
| Deck Thickness |
.750"
|
| Minimum Bore Diameter |
4.360"
|
| Minimum Cross Sectional Area |
3.225 sq. in.
|
| Spark Plug Dimensions |
14mm x .750" w/Gasket Seat
|
SHIPS IN THE LOWER 48 STATES FREE!
CALL SHANON AT 507 445 3235 WITH ANY QUESTIONS.
CONTACT US THE PRICE IS NEGOTIABLE BEST OFFER
Warning: May cause cancer and reproductive harm.
