Ram Air Duct
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct1.jpg)
We start with a paper board mock up to design the air box which will be connected to the original headlight air vent on this 57 Chevy Custom project.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct2.jpg)
Doc started by bending a 2 ft piece of 18 gauge steel in the box brake to a 90 degree angle and is now creating a circle to join the air box to the vent by running the piece through the power stretcher / shrinker.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct3.jpg)
As seen we have attached the vent / airhorn to our custom air box. Notice the hinged cover to allow access to change the K-N filter during service.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct4.jpg)
We built an identical unit for the other side and then fitted and built the air transfer tube between the boxes.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct5.jpg)
We view the air box from another angle and you get a better idea of how we attached the box to the underside apron and the filter access cover.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct6.jpg)
We set up the air transfer tube with a y pipe section fabricated to attach the unit to the fuel injection air box using a urethane hose connection.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct7.jpg)
Assembled in place we check for fit of all components, she is looking good.
![](https://jefflilly.com/images/uploads/fabrication-ram-air-duct8.jpg)
Once we finish the rest of the project we will paint the tube and plenum assembly.
![](https://jefflilly.com/images/uploads/ramairductfinal.jpg)