Chevy GM LS3 Dual Plane 4150 MID-AIR™ MidRise Aluminum Intake Manifold [Black] These rods incorporate a special

These rods incorporate a special doweled cap for specific cap-to-rod alignment and are profiled with extra clearance for stroker applications

They're available in round and oval styles

great looks

Speedmaster flexplates make excellent upgrades to your stock design

pulling trucks

Chevy GM LS3 Dual Plane 4150 MID-AIR™ MidRise Aluminum Intake Manifold [Black] These rods incorporate a specialThe 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.