AFR's 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
- Cylinder Head Style:
- Assembled
- Cylinder Head Material:
- Cast aluminum
- Cylinder Head Finish:
- Natural
- CNC-Machined Combustion Chamber:
- Yes
- Combustion Chamber Volume (cc):
- 85cc
- Combustion Chamber Style:
- N/A
- CNC-Machined Intake Runner:
- Yes
- Intake Runner Volume (cc):
- 270cc
- Intake Port Shape:
- Oval
- Intake Port Location:
- Standard
- Intake Valve Angle:
- 14 degree
- CNC-Machined Exhaust Runner:
- Yes
- Exhaust Runner Volume (cc):
- 132cc
- Exhaust Port Shape:
- Rectangular
- Exhaust Port Location:
- Standard
- Exhaust Valve Angle:
- 8 degree
- Intake Valves Included:
- Yes
- Intake Valve Diameter (in.):
- 2.250 in.
- Exhaust Valves Included:
- Yes
- Exhaust Valve Diameter (in.):
- 1.760 in.
- Valve Type:
- Stainless
- Maximum Valve Lift (in.):
- 0.725 in.
- Valve Springs Included:
- Yes
- Valve Spring Type:
- Dual W/Damper
- Outside Diameter of Outer Spring (in.):
- 1.550 in.
- Valve Guides Included:
- Yes
- Valve Guide Material:
- Bronze
- Valve Seats Machined:
- Yes
- Valve Seat Material:
- Ductile iron
- Valve Seat Machine Style:
- 5-angle
- Retainers Included:
- Yes
- Retainer Material:
- Steel
- Valve Stem Seals Included:
- Yes
- Valve Stem Seal Style:
- Viton Positive stop
- Locks Included:
- Yes
- Lock Style:
- 10 degree
- Camshaft Style:
- Hydraulic roller
- Spark Plug Style:
- Angled
- Guideplates Included:
- Yes
- Guideplate Pushrod Size:
- 3/8 in.
- Rocker Arm Studs Included:
- Yes
- Rocker Arm Nut Thread Size:
- 7/16-20 in.
- Accessory Bolt Holes Drilled:
- Yes
- Valve Cover Mounting Style:
- Perimeter bolt
- Heat Crossover:
- No
- Steam Holes Drilled:
- No
- Oiling Style:
- Through pushrod
- Machined for O-Ring:
- No
- Quantity:
- Sold as a pair.
- Notes:
- Includes hydraulic roller springs. Due to valve angle and location, custom pistons or notching of existing pistons are required. Spark Plug Type 14mm Spark Plug, .750 Reach. Deck thickness 0.625 in.
- Make:
- Ford
- Engine Family:
- Ford big block 385 Series
- Engine Sizes:
- 7.0L/429-7.5L/460
- Years:
- 1968-1987
