Why It Matters
The optional three-speed automatic used 2.48, 1.48, and 1.00 forward ratios.
Also Known As
TH400Turbo Hydra-Matic1966 2+2 automatic
Part profile
1966 Pontiac Turbo Hydra-Matic 400
transmission · Pontiac
Used On
2 linked car pages.
Series 25437 hardtop coupe or 25467 convertible
1966 Pontiac Catalina 2+2 421
254 2+2
26657 two-door pillarless hardtop coupe
1966 Pontiac Grand Prix
26657 two-door hardtop coupe