Engine Air Intake Deceleration ElbowThe Edelbrock 3849 Intake elbows was developed by the Edelbrock engineering team using the latest in Computational Fluid Dynamic (CFD) software. Edelbrock Throttle Body Elbows are the best way to adapt LS1, LS2 and Ford 5. 0L based throttle bodies to EFI manifolds with traditional square bore mounting pads. An internal divider optimizes flow quantity and distribution into the manifold and they can be mounted forward, backward, or sideways on Victor