Ford SB 260 289 302 Windsor MID-AIR™ MidRise Aluminum Intake Manifold [Satin] unlike a stock 3-pinion style

unlike a stock 3-pinion style

thicker walls

You cannot over-shift and miss a gear with Speedmaster automatic shifter

The increased output of the amplifier easily outperforms stock ignitions and will smooth out the engine's idle

manual or EFI pump

Ford SB 260 289 302 Windsor MID-AIR™ MidRise Aluminum Intake Manifold [Satin] unlike a stock 3-pinion styleThe Speedmaster MidRise Air design features the identical plenum and runner design as the normal MidRise. The main difference is that there is an open area under the plenum chamber. This feature is sometimes called an air gap design. The air flowing under the plenum provides a cooler charge for the incoming air with less heat transfer from the engine. This cooler air charge provides additional power and torque.