How to Pick the Right Intake Manifold
Stock intake manifolds are known for having remaining casting lips around the plenums and ports. By upgrading to an aftermarket intake you can smooth the airflow into the engine's combustion chamber, allowing for a more complete mixture and in return an increase in horsepower and torque. Speedway currently offers approximately 130 different types of manifolds from several manufacturers including Edelbrock, Offenhauser, Professional Products, and Weiand, just to name a few.
For an even idle, good throttle response and a solid power band from around 1500-6500RPM, a dual plane intake is a great option for a wide range of street applications. Dual plane intakes, like those that come on the BluePrint Engines we sell, have two separate plenums where the carburetors sit. Each of these plenums in turn feed four cylinders on your standard V-8. Most intake runners (the pathway air takes to the cylinder heads) are also longer on dual plane intakes, allowing for the power and response band to be so wide. To be taken to our online catalog, specifically directed to our selection of dual plane intakes, Click Here.
For those of you looking for an application more geared toward occasional sanctioned strip racing and higher RPMs, the single plane intakes have shorter runners. This results in more air getting to the heads and combustion chambers. As you may have figured out, the single plane intakes utilize one large opening to feed all eight cylinders. These are usually most efficient in the 2500-7500RPM range. To look over our available options for single plane intakes, Click Here.
The commonly held belief is that for street applications, a dual plane intake is the preferred option. This is primarily due to the wider power range and smoother response at low RPM. On a single plane intake, the large plenum is less restrictive, allowing for a higher power range in the upper RPM, but a rough idle and stuttering response at RPM's below 2,500.