D-port head flange for the LS3, LS7, LS9, L99.
These high quality made in the USA flanges are 1/2" thick made from 1018 steel. They feature full 3D CNC porting ensuring a smooth transition from the port shape to the runner piping without the need for porting/crushing the piping. The face of the flange features a 0.1" recess to help concentrically locate the runners, perfect for 1-1/2" SCH10 manifolds. Flanges priced each.