Port Injection Modification Service for Whipple Superchargers, Procharger, and other sheet metal intake manifolds. 

Will fit with stock valve covers, but will require minor coil bracket fabrication.


This service includes:

  • Custom billet port injector bungs and professional tig welding 
  • CNC bung drilling and placement
  • Custom set of anodized black fuel rails
  • Mounting brackets
  • Manifold air temp sensor bung welding if required

LT1/LT4 2.9L Whipple port injection modification service

  • Package your intake carefully and include the order number and your contact information. Email any tracking information to         


    Ship intake manifolds , superchargers or runners for port injection modifications to:

    Attn: Chris Crawford

    3309 Kitty Hawk Road

    Wilmington, NC 28405


 © 2020 Crawford Racing LLC

         6320 Angus Drive

                Suite H-I

        Raleigh, NC 27617

           (919) 896-6498