Description
AFR – Airflow Research 3630 – AFR Big Block Chevy 290cc Oval Port Magnum Aluminum Cylinder Heads Details
This is an unassembled bare cylinder head with valve guides and valve seats installed only. Does not include any parts such as valves, springs, spring components, studs or guideplates.
Big Block Chevy 290cc Oval Port 24° Magnum Basic Package Components
| 100% CNC Ported Combustion Chambers | ||
| 100% CNC Ported Exhaust Ports | ||
| 100% CNC Ported Intake Ports | ||
| Competition 5-Angle Valve Job | ||
| Intake Valve Size – 2.250” (Valve not included) | ||
| Exhaust Valve Size – 1.880” (Valve not included) | ||
| Intake Valve Seats | ||
| Exhaust Valve Seats | ||
| Bronze Valve Guides | ||
| Big Block Chevy 290cc 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 1212 – DO NOT PORT MATCH Intake Manifold to Fel-Pro Gasket. | |
| Exhaust Port Gasket | AFR 6858 | |
| Head Gasket | 4.540” Bore, Fel Pro 1017 AFR 6850 |
|
| Head Bolts & Studs | Standard ARP | |
| Head Bolt Washers | Manley Standard | |
| Stud Girdle | AFR 6210 | |
| Suggested Manifold | Weiand Stealth or Edelbrock Vic Jr. or RPM Performer | |
| Spark Plug Starting Range | Autolite 3935 | |
| Combustion Chambers | 113cc As Cast | |
| Intake Port Volume | 290cc As Cast | |
| Exhaust Port Volume | N/A | |
| 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. | |
