AFR - Airflow Research 265cc Oval Port 24° Magnum Street Aluminum Cylinder Heads BB-Chevy
033-3600
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109cc Combustion Chambers
| Big Block Chevy 265cc Oval Port 24° Magnum Basic Package Components | |
| 50% CNC Ported Combustion Chambers | |
| 40% CNC Ported Exhaust Ports (Bowl Blend) | |
| 80% CNC Ported Intake Ports (Bowl Blend) & Gasket Port Match | |
| Competition 5-Angle Valve Job | |
| Intake Valve Size - 2.190'' (Valve not included) | |
| Exhaust Valve Size - 1.880'' (Valve not included) | |
| Intake Valve Seats | |
| Exhaust Valve Seats | |
| Bronze Valve Guides | |
| Big Block Chevy 265cc Oval Port 24° Magnum Street Head Specifications | |
| Head Torque w/Moly Lube | 75 Ft. Lbs. |
| Rocker Stud Torque | 55 Ft. Lbs. |
| Intake Port Gasket | Fel-Pro 375-1212 - DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket. |
| Exhaust Port Gasket | AFR 033-6858 |
| Head Gasket | 4.540'' Bore, Fel Pro 375-1017 AFR 033-6850 |
| Head Bolts & Studs | Standard ARP |
| Head Bolt Washers | Manley Standard |
| Stud Girdle | AFR 033-6210 |
| Suggested Manifold | Weiand Stealth or Edelbrock Vic Jr. or RPM Performer |
| Spark Plug Starting Range | Autolite 3935 |
| Combustion Chambers | 109cc As Cast |
| Intake Port Volume | 265cc As Cast |
| Exhaust Port Volume | 115cc As Cast |
| Spring Pocket can be cut to 1.750, no deeper. | |
| Valve Spacing | Standard |
| Rocker Arms | Standard |
| Valve Angle | 24° / 4° Intake ; 15° / 4° Exhaust |
| Angle Mill, 97cc Maximum | .009'' per cc |
| Flat Mill, 102cc Maximum | .006'' per cc |
| NOTE: | Flat and Angle mills might require a .120'' thick head gasket. |
Specifications:
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