This engine produced 630hp with a single plane intake and 580 with a dual plane. Some years ago june 2012 we did a dyno test of a small block mopar 408 see our dyno test 19.
Edelbrock Intake Manifold Dyno Test Single Vs Dual Air Gap Vs Regular
Dual plane intake vs single plane. Moving on to the single plane edelbrock victor jr. Torque production with the dual plane exceeded 400 lb ft from 3800 rpm to 5100 rpm making for a broad usable torque curve. In fact in 90 of the cases a dual plane intake will outperform a single plane. Single plane manifolds have a single intake opening into the plenum and feeds all 8 cylinders directly. A dual plane manifold has a split opening in the plenum area directly below the carburetor mounting pad. Edelbrock is here to clear that up and make sure you have the correct manifold for your application and use.
The classic intake battle between the racy single plane and the dynamic dual plane usually ends up looking something like this. Unfortunately for the single plane the mild 351w combination was. Intake the peak horsepower output jumped to 441 horsepower at a slightly higher 6500 rpm but peak torque dropped to 405 lb ft at again higher 5000 rpm. A dual plane intake manifold has two separate plenums that each feed only four cylinders while a single plane intake manifold has a single open plenum that feeds all eight cylinders. Each side of the opening feeds four cylinders on a v8 engine. Do you know the difference between a single and dual plane intake manifold.
Gallery of Dual Plane Intake Vs Single Plane
