205CC SBF COMPETITION CYLINDER HEAD

$2,672.42

SOLD AS A PAIR

Option 1:



AFR's 205cc "Competition" cylinder heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Recommended for race applications and very agressive street/strip builds operating up to 7400 RPM. Maximum intake flow potential @0.750" lift is 331 CFM.


Basic Package Components
100% CNC Ported Combustion Chambers
100% CNC Ported Exhaust Ports
100% CNC Ported Intake Ports
Competition 5-angle Valve Job

 
8mm Bead Lock Intake Valve, 2.080" x 5.000" Overall Valve Length
8mm Bead Lock Exhaust Valve, 1.600" x 5.030" Overall Valve Length
PAC Racing Spring 1.550" OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710" maximum lift, Max RPM 7200-7400 (upgrades available)
10° Steel Retainers 1.500" O.D x 1.120" I.D x .705" I.D
10° Bead Lock Valve Keepers with lashcap recess
ARP 7/16" Rocker Studs
Adjustable 5/16" Guide Plates
Viton Valve Seals .600" O.D x .495" I.D
Hardened Valve Spring I.D Locator 1.550" O.D x .705" I.D
Ductile Iron Intake Valve Seats 2.131" O.D x 1.680" I.D x .375" Deep
Ductile Iron Exhaust Valve Seats 1.650" O.D x 1.350" I.D x .375" Deep
8 mm Bronze Valve Guides .502" O.D x 2.100" O.A.L

205cc Street Head Flow Chart
  .200 .300 .400 .500 .550 .600 .700 .750
Int 139 199 251 285 297 308 317 320
Exh 121 170 206 219 227 230 232 234

Test conducted at 28" of water (pressure) on Superflow 1020
Bore Size: 4.060", 3/4" radius plate exhaust, 1 3/4" curved pipe


Specifications & Features:
Material
A356 Aluminum
Intake Port Volume
205cc
Intake Port Dimension
2.115" H x 1.300" W x 3/8 Radius
Intake Port Location
Stock
Exhaust Port Volume
70cc
Exhaust Port Dimension
1.400" H x 1.400" W
Exhaust Port Location
Raised .125"
Combustion Chamber Size
58cc or 72cc
Valve Cover Bolt Pattern
Perimeter Bolt
Valve Angle
20°
Valve Spring Pocket Diameter
1.580" O.D
Max Valve Spring Pocket Machining
1.625" O.D
Deck Thickness
.750"
Minimum Bore Diameter
4.000"
Flat Mill
.006" per cc 54cc Max (from 58cc); 68cc Max (from 72cc);
Angle Mill
.009" per cc 48cc Max (from 58cc); 62cc Max (from 72cc);
Minimum Cross Sectional Area
2.165 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.
Head Bolt Diameter
1/2"
 
Recommended Components:
Intake Port Gasket, 1.200" X 2.000" w/ 3/8" radius, Fel-Pro #1262
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 #1487
Head Gasket, Fel-Pro #1011-1
SB Ford 1/2" Bolt Head Bolt Kit, ARP #154-3603
SB Ford 1/2" Bolt Head Stud Kit, ARP #254-4503
1/2" Bolt - 7/16" Thread Head Bolts, ARP 254-3708
Head Bolt Washer Kit, Manley
Stud Girdle
Suggested Manifold
Super Vic or Vic Jr.
Spark Plug Starting Range
Autolite 3922 - Race Gas
Spark Plug Starting Range
Autolite 3924 - Pump Gas


Item# Description
1450

205cc SBF Competition Cylinder Head



$2,672.42

ADD TO CART
1458

205cc SBF Competition Cylinder Head



$2,672.42

ADD TO CART

REVIEWS


Appearance
Installation
Price / Value
Quality
Average Rating: 0 of 5

joinmail-icon

 

join our email list

You’ll be first to know about Air Flow Research products, discounts and special events!