- The Speedmaster MID-AIR design features the identical plenum and runner design as the normal mid-rise. 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.
- 147 Intake Manifold, Carbureted
- Speedmaster creates unique & distinctive DNA items inspired by the blend of old and new technology. Its empowered work forced drives innovation not only in the products it sells but with the way it goes about doing it.
- TRACK PROVEN – Surviving the longevity of road, race and recreation is mandatory for all “Track Proven” products, Bringing you closer to product perfection.
- 12-Month Limited Worldwide Warranty


Frete Grátis em todo o BrasilProduto Original Importado dos EUA
Speedmaster 1-147-078 Compatible with Oldsmobile 400 425 455 MID-AIR‚Ñ¢ MidRise Air Aluminum Intake Manifold [Black]
*$4,712.50
Informação adicional
Manufacturer | Speedmaster |
---|---|
Brand | Speedmaster |
Model | 1-147-078 |
Item Weight | 26 pounds |
Product Dimensions | 23 x 16 x 8 inches |
Country of Origin | China |
Item model number | 1-147-078 |
Manufacturer Part Number | 1-147-078 |
Date First Available | January 13, 2025 |
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