Built for boost, Wilson Manifolds‘ billet elbow allows the use of high-performance intake manifolds in accordance with large-diameter, single-bore fuel injection throttle bodies. The big design update is the addition of a full-length plenum divider that smooths and balances air flow into the engine. The trick elbows are available for 65 mm to 105 mm throttle bodies; feature popular Ford and Chevy throttle body bolt patterns; can be configured with forward, rear, and sideways inlets; and feature machined sensor ports to add even more versatility.

These elbows also feature 4150 or 4500 flanges and Wilson Manifolds’ Keith Wilson was quick to sing their praises. “It was all developed in CAD so when the throttle blade is wide open it lines up perfectly with the elbow’s wing or divider so you get just as much air on each side of the plenum,” he said. “Everything has been built and O-ringed so it easily bolts together and its tight; we tested it up to 100 psi. Each elbow has a Ford bolt pattern and an LS bolt pattern on the front, so this is a very versatile piece. We are developing a side mount design, a 90-degree, for the guys that want that.”

The development of the distribution divider was a reaction to Wilson Manifold customers. “Some people are concerned with how you bring air into the throttle body. Some have a bent post coming into the throttle body which tumbles the flow and they were saying the back of the plenum was getting more of the air,” Wilson said. “Most of our customers are getting excellent distribution but we are offering this design for customers that want it.”

As with any forced induction setup the more boost you run, the more critical seemingly small restrictions can become. These new Wilson Manifolds billet elbows are designed to ensure smooth sailing as you turn up the boost.