This is what was on the ECM when I got it so I do not know what has been changed or what needs changed. Im running the following:

1974 Chevrolet Nova Custom

  • 5.3L Vortec LM7 with Stock Harness all from a 2002 Suburban 1500 2wd
  • 4L60E
  • 3.73:1 Gears
  • Stock MAF/IAT Sensors
  • 235/65R15 Rear Tires


At some point someone has put in a stage 3 cam kit with rods, arms and springs but I do not know the full details. Below are my HPT and HPL Files. The Tune is exactly how it was when I got the car. The HPL file is me driving the car around the neighborhood, nothing special.

74 Nova First Read.hpt
21-10-22 13-02-49.hpl