New Edelbrock Victor Jr. Head For S/B Chevrolet Ideal for entry-level racers or high-end street, the #77569 is a 64cc version of the popular Victor Jr. 23° cylinder head. The 64cc combustion chamber yields around 10.2:1 compression in a zero-deck flat-top 350-inch engine, and about 12.5:1 when used with a 12cc domed piston. This head is available bare #77569, bare with valves #77579, complete for hydraulic roller or flat tappet cams #77589 and complete for roller cams #77599. Victor Jr. heads are designed for maximum performance in competition applications and the engineers at Edelbrock have worked with many great racing teams over the years to help ensure out-of-the-box usable power. Match with an Edelbrock Super Victor #2825 manifold for maximum performance. Download photo. Contact: Bill Groak, Pacific Communications Group (310) 224-4940 (bgroak@paccomgrp.com)