A few months ago, we hatched a plan to test every intake manifold for the LS3 engine ... fed by eight individual runners. Unlike a tunnel ram, where the runners are all similar lengths, the ...

Accordingly, he ditched the 383 stroker for an LS3 crate engine, a setup rated for some 525 horses. To account for the new ...

We took an LS3 block from Summit ... heads were teamed with a Holley Hi-Ram intake manifold. Available with a variety of different tops, we configured the tunnel-ram style Hi-Ram with a dual ...

Let us begin by saying this was the most impressive stock replacement-type intake manifold we ever ... would boost mid-range torque like an old tunnel-ram manifold of yesteryear.

Compared with the broad powerband in today's LS3-powered Corvettes ... It's no coincidence that this tunnel-ram-style intake looks very similar to the custom sheetmetal manifolds popular with ...