14" x 4" Washable Element Extreme Top w/Black Ring Flat Base Air Cleaner Kit Our dual plane big block

Our dual plane big block manifold is now available with rectangular ports

The cells have foam in the base to prevent fuel aeration

Speedmaster fuel injectors offer precision control of fuel delivery and atomization for increased power

Although the GM heads are good pieces

our Top-End engine kits will save you the time and hassle of mixing and matching components yourself

14" x 4" Washable Element Extreme Top w/Black Ring Flat Base Air Cleaner Kit Our dual plane big blockSpeedmaster's air cleaners not only look great, they also provide your engine with cleaner air for better performance. They're available in round and oval styles, and you can choose between plain polished, straight ball milled, and flame ball milled finishes.