Once again Cadillac fielded six models:

1. Model 37-60 (V-8 engine)
2. Model 37-65 (V-8 engine)
3. Model 37-70 (V-8 engine)
4. Model 37-75 (V-8 engine)
5. Model 37-85 (V-12 engine)
6. Model 37-90 (V-16 engine)

• The series 37-60, 37-65, 37-70, 37-75 were all eight cylinder cars.
• The 37-85 was the same as the 37-75 except now it had twelve cylinders.
• The series 80 of 1936 was dropped this year.
• Also the 37-90 (with 16 cylinders) was essentially the same as the 36-90 of 1936.
• In fact, this was the last year for this overhead valve V-16 engine and body with its 3912mm wheelbase.
• Next year, the sixteen cylinder power plant would be an L-head shoehorned into the series 75 on a 3581mm wheelbase.