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AFR BB Ford 280 HR "Bullitt" Cylinder Heads 85cc

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Your Price:
$2,246.79 (You save $13.20)
80.00 LBS
Calculated at checkout

Product Description

AFR BB Ford 280 "Bullitt" Series Cylinder Heads (#3805)

Our "Bullitt" series big block Ford 280cc cylinder heads feature partially CNC ported intake runners, exhaust ports and 85cc combustion chambers. Built from A356 aluminum castings and utilizing high quality components throughout. Featuring standard exhaust port locations for easy header fitment. Recommended for street, towing or street/track engines with displacements up to 477 cubic inches with an operating range up to 6200 RPM. AFR cylinder heads are also available bare (without parts), contact us for details.


50% CNC Ported Combustion Chambers
80% CNC Bowl Blend Intake & Exhaust
Competition 5-Angle Valve Job
Intake Valve 2.250" x 5.250" x 11/32”
Exhaust Valve 1.760" x 5.050" x 11/32”
PAC Racing Hydraulic Roller Dual Valve Spring
175# on seat, .725" maximum lift
Max RPM 6500-6700
10° Manley Steel Retainers
10° 11/32" Bead-lock Valve Keepers
ARP 7/16" Rocker Studs
Adjustable 3/8" Guide Plates
Steel Shell Viton Valve Seals
Exhaust Bronze Valve Guides


Intake Port Volume: 280cc
Intake Port Dimension: 2.230" x 1.815" x .525” rad.
Intake Port Location: Stock
Minimum Cross Sectional Area: 3.225 sq. in.
Exhaust Port Volume: 132cc
Exhaust Port Dimension: 1.830"H x 1.600"W
Exhaust Port Location: Stock
Combustion Chamber Size: 85cc
Valve Angle: 14° Intake - 8° Exhaust
Valve Cant: 4.04° Intake - 4.12° Exhaust
Deck Thickness: .750"
Minimum Bore Diameter: 4.360"
Spark Plug Dimensions: 14mm x .750" w/Gasket Seat

NOTE: Due to AFR's revised valve location and angle, application specific AFR pistons or fly cutting your current pistons will be required.

BB Ford 280 Bullitt 280 Flow Chart

Tested on 4.380 Bore


Int     169    244    309    354    385

Exh    130    174    214    238    254



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