This Intake Manifold is in it's own class among single plane Small Block Chevy manifolds. Its long runner makes excellent horsepower and torque numbers (from 3000-7500RPM) while using less fuel to do so. The Super Intake Manifold has all of the features above and includes bigger runners for those big cubic inch small block Chevys from 400 and up. In addition, it will help you to make big block power. The Plus Intake Manifold is a great racing manifold that builds 20 extra horsepower over 7000RPMs than the standard Intake Manifold. You can port these intakes all the way out to a 1209 gasket. All manifolds are available in satin or chrome polish.