AFR BBC 357/121cc CNC magnum cylinder heads (pair)
SKU: AFR2010-TI
$9,067.99
| AFR BBC 357/121cc CNC magnum cylinder heads (pair) |
Description
357cc BBC Rectangle Port Cylinder Head
Recommended for radical “Pro Street” or racing applications with displacements up to 605 cubic inches, operating at or below 7400 RPM. AFR’s 357cc cylinder heads features fully CNC machined intake runners, exhaust ports and combustion chambers; capable of flowing 425 CFM at 0.800″ of lift. These cylinder heads now come standard with Titanium retainers.
| Included Components | |
| 100% CNC Ported Combustion Chambers | |
| 100% CNC Ported Exhaust Ports | |
| 100% CNC Ported Intake Ports | |
| Competition 5 Angle Valve Job | |
| 11/32″ Intake Valve, 2.300″ x5.500″ O.A.L |
AFR #7626
|
| 11/32″ Tulip Exhaust Valve, 1.880″ x 5.450″ O.A.L |
AFR #7631
|
| PAC Racing #1224 1.625” OD Solid Roller Dual Valve Spring 275 lbs. on seat, .850” maximum lift, Max RPM 7400-7600 (upgrades available) |
AFR #8031
|
| 10° Titanium Retainers 1.500″ O.D x 1.180″ I.D x .765″ I.D |
AFR #8507
|
| 10° 11/32″ Valve Locks with lashcap recess |
AFR #9005
|
| ARP 7/16” Rocker Studs Intake |
AFR #6407
|
| ARP 7/16” Rocker Studs Exhaust |
AFR #6406
|
| Adjustable 3/8″ Guide Plates |
AFR #6109
|
| 11/32″ Viton Valve Seals |
AFR #6613
|
| Hardened Spring Cup 1.740″ O.D / 1.650″ I.D |
AFR #8046
|
| Intake Valve Seats 2.450″ O.D x 2.000″ I.D x .375″ Deep |
AFR #9065
|
| Exhaust Valve Seats 2.000″ O.D x 1.580″ I.D x .375″ Deep |
AFR #9064
|
| 11/32″ Intake Bronze Valve Guides .502″ O.D x 2.10″ O.A.L |
AFR #9041
|
| 11/32″ Exhaust Bronze Valve Guides .502″ O.D x 2.25″ O.A.L |
AFR #9042
|
| 357cc Competition Flow Chart | |||||||
| .200 | .300 | .400 | .500 | .600 | .700 | .800 | |
| Int | 167 | 242 | 307 | 354 | 389 | 409 | 419 |
| Exh | 135 | 199 | 249 | 276 | 288 | 295 | 305 |
Test conducted at 28″ of water (pressure) on Superflow 1020
Bore Size: 4.600″, intake 3/4″ radius plate exhaust, 2 1/8″ curved pipe
| Specifications & Features: | |
| Material |
A356 Aluminum
|
| Intake Port Volume |
357cc
|
| Intake Port Dimension |
2.515″H x 1.780″W x 11/32 Radius
|
| Intake Port Location |
Stock
|
| Exhaust Port Volume |
135cc
|
| Exhaust Port Dimension |
1.780″H x 2.025″ W
|
| Exhaust Port Location |
.375″ Raised
|
| Combustion Chamber Size (Full CNC) |
121cc
|
| Valve Cover Bolt Pattern |
Perimeter Bolt
|
| Valve Angle |
24°/4° Int, 15°/4° Exh
|
| Valve Spring Pocket Diameter |
1.725″ O.D
|
| Max Valve Spring Pocket Machining |
1.750″ O.D
|
| Deck Thickness |
.750″
|
| Minimum Bore Diameter |
4.250″
|
| Flat Mill |
.006″ per cc/ Maximum 114cc
|
| Angle Mill |
.009″ per cc/Maximum 104cc
|
| Note: Angle mills might require a .120″ Thick intake gasket. | |
| Minimum Cross Sectional Area |
3.435 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 |
AFR #6854 (.120″ Thick)
|
| Intake Port Gasket |
AFR #6856 (.060″ Thick)
|
| 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 |
AFR #6858
|
| Head Gasket |
Fel-Pro #1017-1 (Mark IV) or AFR #6850
|
| Head Gasket |
Fel-Pro #1047 (Mark V and VI) or AFR #6849
|
| Head Bolts |
ARP 135-3703 (Mark IV) or AFR #6306
|
| Head Bolts |
ARP 135-3707 (Mark V) or AFR #6308
|
| Head Studs |
ARP 235-4713 or AFR #6307
|
| Head Bolt Washers |
Manley, AFR #6320
|
| Stud Girdle, (AFR Specific) |
AFR #6202
|
| 7/16 Stud Mount Rocker Arms – 1.7 Ratio (For Optimized Geometry) |
AFR #6043
|
| 1.7 Shaft Mount Rocker Arms T&D |
AFR #6065
|
| Shaft Mount Rocker Arms |
Crower or Jesel Pro Series
|
| Suggested Manifold |
Victor Jr
|
| Suggested Manifold |
Super Victor
|
| Spark Plug Starting Range |
Autolite 3924 (Pump Gas) / 3922 (Race Gas)
|
| Note: 1” longer head bolt needed on four bottom exhaust bolt holes. | |
Additional information
| Part Number | AFR2010-TI |
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