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.
CYLINDER HEAD 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
BASIC DIMENSIONS & DATA:
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
------.200---.300---.400---.500---.600
Int 169 244 309 354 385
Exh 130 174 214 238 254
PART NUMBER: AFR-3805
Due to the ever increasing costs and limited availability of certain materials, skyrocketing shipping costs, credit card usury fees as well as the inept policies of the current administration, we can no longer provide set pricing on any products on this web site. Email directly at info@FlowTechInduction.com for the latest pricing and availability.
