Edelbrock Victor Jr. 23-Degree Cylinder Head for Small Block Chevy Mechanical Roller Springs 220cc Complete

This Edelbrock (61259) Victor Jr. 23° 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. 23° 220 cylinder head is the CNC machined chambers and bowls, which result in consistency and improved performance. It also features angled spark plug holes and maintains the stock 23° valve angle as well as the intake flange bolt pattern for use with 1986 and earlier intake manifolds. All of this allows this single cylinder head to deliver 530-580 hp potential right-out-of-the-box, making it ideal for a budget minded engine build desiring a high quality cylinder head that still uses a stud and guide plate rocker system.

Features and Benefits:
- Designed for use with Mechanical Roller camshafts
- For use on Small Block Chevy engines
- Delivers 530-580 potential HP right from the box
- CNC machined chambers and bowls offer consistent performance
- Angled spark plug holes with stock valve angle/intake flange bolt pattern
- Sold individually
- Satin finish

Specifications:
- Combustion chamber volume: 64cc
- Intake runner volume: 220cc
- Exhaust runner volume: 85cc
- Intake valve diameter: 2.10"
- Exhaust valve diameter: 1.60"
- Valve stem diameter: 5/16"
- Valve guides: Manganese bronze
- Deck thickness: 11/16"
- Valve spring diameter: 1.55"
- Valve spring maximum lift: .670"
- Rocker stud: 7/16"
- Guide plate: Hardened steel
- Pushrod diameter: 5/16"
- Valve angle: 23°
- Exhaust port location: Raised .300"
- Spark plug fitment: 14mm x .750 reach, gasket seat

Tech Tips:
- Match with Edelbrock head gasket sets or use Fel-Pro intake gasket #1206 and Fel-Pro exhaust gasket #1405.
- Requires hardened pushrods.
- Use head bolt kits for easy installation.

Vehicle Fitment:
- 1975-1979 Chevy C10
- 1979-1986 C1500/C2500/C3500