For clarification, the high-rise principle concerns the angle at which the intake manifold port (branch, runner, etc.) approaches the cylinder head inlet port. By bringing the centerline of the ...

In case you had any doubts, Holley is serious about being in the intake manifold business. Their intent is to offer completely engineered induction systems that will produce proven results, and their ...

What’s the first thing you look at when checking out someone’s engine bay? Chances are the intake manifold is at the top of that list. The type of intake manifold can tell a lot about it; stock ...