Driveline Options for the 1974 GTO

The following list contains the standard and optional driveline options for the 1974 GTO. The bold text for each option is used in the Top Speed Calculator. If your car is modified, use the closest match. You'll have a chance to make changes in the Top Speed Calculator page.

Select Engine for the Max RPM: (net Hp values)

Standard 200hp (350cu in, V8, 1-4bbl, 200Hp, 4000RPM at Max Hp)

Select Transmission for the Gear Ratios:

Standard 3-Spd Man Column/Floor Shift (1st 2.54:1, 2nd 1.50:1, 3rd 1.00:1, rev 2.63:1)
Optional 4-Spd Man Floor Shift M20 (1st 2.54:1, 2nd 1.80:1, 3rd 1.44:1, 4th 1.00:1, rev 2.54:1)
Optional 3-Spd Auto Column/Floor Shift (1st 2.48:1, 2nd 1.48:1, 3rd 1.00:1, rev 2.08:1)

Select Rear Axle Ratio:

  Engine   Trans  
  200hp   3-Man   .   Std
      4-Man   .   Std
      3-Auto   Opt   Std

Select Tire Size:

Standard black wall E70x14 (P205 / 70R14)
Optional white lettered E70x14 (P205 / 70R14)
Optional radial white wall F78x14 (P199 / 78R14)*
(* tire sizes are based on direct conversion for calculation purposes, they are not standard codes)