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Billet Aluminum EFI 48

Autotrend EFI has captured the style and look of the vintage Stromberg 97 and 48 carburetors with our new Billet Aluminum EFI 48

 EFI 97 


  • CNC Billet Aluminum Construction

The EFI 48 has a unique 5 piece design. All components fit together perfectly due to precision CAD/CAM design. 

  • Single Oval Butterfly Design

The EFI 48 incorporates a single oval butterfly allowing 65% more air flow than a conventional Stromberg 97 carburetor. **  See flow Data

  • Stainless Steel Throttle Shaft With Roller Bearings and internal clock spring

Precision smooth throttle shaft movement and consistent throttle return are a must whether your running a running a single unit or multiple units. Each unit has it’s own adjustable internal clock spring insuring positive throttle return and eliminating the need for external return spring. Each unit incorporates positive stop idle set adjustment and wide open throttle stop. Stainless steel shafts ride on precision roller bearings for extremely smooth throttle action and consistent throttle return.

  • EFI 48 Finish

 Standard is a brushed aluminum finish.  Custom finishes available.

  • Complete Systems

Units are sold as a complete system including Engine Management System, Custom Wire Harness.

  • Flow Data

The EFI 48 was flow tested on a SuperFlow SF-600 flow bench.  We did a comparative flow test between an original Stromberg 97 and our unit flowing them at today’s industry standard of 28 inches of water… The results were impressive.

            Stromberg 97                          203 CFM

            Autotrend EFI 48                    344 CFM

  Billet Aluminum EFI 97    Billet Aluminum EFI 97  Billet Aluminum EFI 97

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Dyno Testing

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