Why It Matters
The three-speed automatic and variable-pitch converter served all 1966 Rivieras.
Also Known As
1966 Riviera ST400
Part profile
1966 Riviera Super Turbine 400
transmission · Buick
Used On
1 linked car page.
two-door fastback sport coupe
1966 Buick Riviera Gran Sport
MW 425, 340 gross hp