280CC BBF CYLINDER HEAD

$2,550.86

SOLD AS A PAIR

Option 1:



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

 

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 Cant
4.04° Intake/4.12° 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
CARB Status: THESE PRODUCTS ARE ILLEGAL TO OPERATE ON ANY PUBLIC HIGHWAY. THIS MEANS ANY PUBLIC PAVED OR UNPAVED ROADWAY OR IN A PUBLIC PARK. THESE PRODUCTS ARE ONLY LEGAL IF USED ON A DEDICATED RACING VEHICLE. VIOLATION ARE SUBJECT TO A MAXIMUM PENALTY OF $37,500 PER VIOLATION PER VEHICLE, REVOCATION OF REGISTRATION BY DMV, LOSS OF USE ON PUBLIC RIGHT OF WAYS AND PROOF OF CORRECTION OF THE TAMPERING.
 
Recommended Components:
Intake Port Gasket
Important: Do not use your AFR gasket as a template to port match your intake manifold as one AFR gasket is used for many AFR runner volumes.
Exhaust Port Gasket, Fel-Pro #1420
Head Gasket, 4.500 Bore, Fel-Pro #1018
Head Bolts, ARP #255-3701
Head Studs, ARP# 155-4203 12 Point
Head Bolt Washers, Manley
Stud Girdle
1.75 Shaft Mount Rocker Arms T&D
Suggested Manifold
Suggested Manifold
Spark Plug Starting Range
Autolite 3922 - Race Gas
Spark Plug Starting Range
Autolite 3924 - Pump Gas


Item# Description
3805

280cc BBF Cylinder Head



$2,550.86

ADD TO CART
3806

280cc BBF Cylinder Head



$2,664.31

ADD TO CART
3802

280cc BBF Cylinder Head



$2,550.86

ADD TO CART
3803

280cc BBF Cylinder Head



$2,664.31

ADD TO CART

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