Brodix Big Block Chevy heads are designed with 26 degree intake valve angles, same as stock GM big block heads and accept all standard pistons, intake manifolds and rocker arms.
The exhaust ports are raised .600 higher than stock for enhanced flow and the valve covers are raised to assure no oil leakage.
280cc, 305cc, 312cc, 340cc, 365 & 370cc Intake Ports
BB-1, BB-2, BB-2+, BB-2X, BB-2Xtra & BB-3
BB-1, BB-2, BB-2plus have 2.250 x 1.880 stainless valves
BB-2X, BB-2Xtra, BB-3 have 2.300 x 1.880 stainless valves
1.625 dual springs, 270lb @ 2.000 in, max lift .850 Titanium retainers
10 deg locks
Assemblies are also available for hydraulic, hydraulic roller, flat tappet and roller cams up to .900 lift.