SKU: SKU: EDE61255
Edelbrock part #61255 Victor Jr. 23deg 220 cylinder head is designed for small-block Chevy Its 64cc combustion chamber yields around 10:1 compression ratio in a typical flat-top application and about 12.5:1 when used with some of the most common 12cc dome pistons. One of the key features of the Victor Jr. 23deg 220 cylinder head is the CNC machined chambers and bowls, which result in consistency and improved performance. They also feature angled spark plug holes and maintain the stock 23deg valve angle as well as the intake flange bolt pattern for use with 1986 and earlier intake manifolds. All of this allows this cylinder head to deliver 530-580 hp potential right-out-of-the-box, making them ideal for a budget minded engine build desiring a high quality cylinder head that still uses a stud and guide plate rocker system. Cylinder Head Specifications: - Exhaust port location: Raised .300" - Spark plug fitment: 14mm x .750 reach, gasket seat
The Edelbrock #61255 Victor Jr. 220cc cylinder head is designed for 1955-86 SB Chevy applications. The #61249 Victor Jr. is perfect larger cubic inch small blocks and vehicles where maximum power is needed.
| Exhaust Valve Diameter | 1.60 IN |
| EGR Port | No |
| Valve Stem Diameter | 0.3125 IN |
| Seat Material | Ductile Iron |
| Deck Thickness | 0.6875 IN |
| 10671 | Yes |
| 8788 | Yes |
| 10024 | Yes |
| 8789 | Yes |
| 10025 | Yes |
| 10252 | Chromoly Steel |
| 10583 | No |
| 10261 | No |
| 10 | Aluminum |
| 30 | No |
| 6627 | 220 CCM |
| 6634 | Yes |
| 6636 | Chromoly Steel |
| 3390 | Performance |
| 10582 | No |
| 6626 | 64 CCM |
| 306 | Yes |
| 9799 | Yes |
| Valve Lock Material | Steel |
| Guide Plate Material | Hardened Steel |
| Valve Spring Diameter | 1.55 IN |
| Seat Angle | Exhaust 45 deg/Intake 45 DD |
| CNC Ported | Yes |
| Series | Victor Jr. |
| Head Casting Number | N/A |
| Guide Material | Manganese Bronze |
| Quantity | Sold Individually |
| Horsepower | 450-600 HJ |
| Retainer Included | Yes |
| Intake Valve Diameter | 2.10 IN |
| Camshaft Type | Hydraulic Roller |
| Valve Angle | 23 DD |
| Construction Type | Complete |
| Valve Spring Maximum Lift | 0.630 IN |
| Exhaust Port Location | +.300 |
| Exhaust Runner Volume | 85 CCM |
| Family | Victor Jr. |
| Push Rod Diameter | (Suggested) 0.6875 IN |
| Rotor Center Bore Inside Diameter | angled |
| Rocker Arm Stud Diameter | 0.4375 IN |
California Prop 65 Warning: WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.