The Edelbrock part 77599 Small Block Chevy Victor Jr. 215cc cylinder head is an affordable version that will still allow for maximum power when used in competition and ultra high - performance's street applications. This cylinder head has the potential of 530 - 580 hp out - of - the - box, for a cost effective, race - winning set - up. These cylinder head features angled spark plug holes and accept standard 23deg valvetrain hardware. The 77599 cylinder head has a 64cc combustion chamber and come with springs for mechanical roller camshafts. The 64cc chambers yield about 12.51 compression with a 12cc domed piston in a 350 V8.