AFR SBF 205/58cc renegade competition heads (pair)
SKU: AFR1450
$5,290.73
AFR SBF 205/58cc renegade competition heads (pair)
Description
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 |
AFR #7255
|
| 8mm Bead Lock Exhaust Valve, 1.600″ x 5.030″ Overall Valve Length |
AFR #7254
|
| PAC Racing Spring 1.550″ OD Solid Roller Dual Valve Spring, 220 lbs on seat, .710″ maximum lift, Max RPM 7200-7400 (upgrades available) |
AFR #8000
|
| 10° Steel Retainers 1.500″ O.D x 1.120″ I.D x .705″ I.D |
AFR #8511
|
| 10° Bead Lock Valve Keepers with lashcap recess |
AFR #9009
|
| ARP 7/16″ Rocker Studs |
AFR #6405
|
| Adjustable 5/16″ Guide Plates |
AFR #6103
|
| Viton Valve Seals .600″ O.D x .495″ I.D |
AFR #6612
|
| Hardened Valve Spring I.D Locator 1.550″ O.D x .705″ I.D |
AFR #8048
|
| Ductile Iron Intake Valve Seats 2.131″ O.D x 1.680″ I.D x .375″ Deep |
AFR #9059
|
| Ductile Iron Exhaust Valve Seats 1.650″ O.D x 1.350″ I.D x .375″ Deep |
AFR #9069
|
| 8 mm Bronze Valve Guides .502″ O.D x 2.100″ O.A.L |
AFR #9051
|
| 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 |
AFR #6832
|
| 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 |
AFR #6839
|
| Head Gasket, Fel-Pro #1011-1 |
AFR #6808
|
| SB Ford 1/2″ Bolt Head Bolt Kit, ARP #154-3603 |
AFR #6318
|
| SB Ford 1/2″ Bolt Head Stud Kit, ARP #254-4503 |
AFR #6317
|
| 1/2″ Bolt – 7/16″ Thread Head Bolts, ARP 254-3708 |
AFR #6319
|
| Head Bolt Washer Kit, Manley |
AFR #6320
|
| Stud Girdle |
AFR #6207
|
| Suggested Manifold |
Super Vic or Vic Jr.
|
| Spark Plug Starting Range |
Autolite 3922 – Race Gas
|
| Spark Plug Starting Range |
Autolite 3924 – Pump Gas
|
Additional information
| Part Number | AFR1450 |
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