AFR 3803/3806 BBF 280/75 OR 85CC .680 LIFT ASSEMBLED YOUR CHOICE OF CHAMBER SIZE

Regular price $ 2,228.08

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
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 NEGOTIABLBEST OFFER  


Warning: May cause cancer and reproductive harm.