Edelbrock and Pat Musi Performance have combined efforts to produce the finest standard intake port location big - block Chevy head available. The Edelbrock 61419 Victor 24deg CNC Bare cylinder head features an extra thick deck and extra material in the spring pockets for a heavy - duty casting that can be used with high - lift cam and heavy spring combinations. Edelbrock equips the complete cylinder head with Manley dual - spring valve springs and titanium retainers good for up to .880 lift. The port designs are large oval (367 lh 377 rh) that produce impressive flow - out - of - the - box. The exhaust port exits are raised .750 to greatly improve exhaust flow and power. Off the shelf large oval - port intakes are available through Edelbrock.