Single Plane EFI Split-Design Race Intake Manifold- GM LS3/L92 EFI Single Plane Split-Design Race Intake Manifold Fits All GM LS Gen III or IV Engines Equipped with LS3/L92 Cylinder Heads HolleyTechnical Data: ? As Cast Runner Cross Sectional Area 4. 5 in2 at the runner entry tapered to 3. 2 in2 at the flange exit The Holley Ls Race manifold incorporates a split feature, which allows disassembly of the intake for direct access to internal plenum and port surfaces, making custom porting and matching a snap. With shoulder bolt locators and O ring seal, reassembly is simple and precise. ? A B Height 7. 20 inch (0 carb flange angle) The Ls Race