Why It Matters
The W-30 455 used a heavy-duty M40 Turbo Hydra-Matic 400 identified by a 1974 OX tag and a car-matching VIN stamp.
Also Known As
1974 Hurst Olds TH4001974 Oldsmobile OX transmission1974 W-30 M40 automatic
Part profile
transmission · General Motors
The W-30 455 used a heavy-duty M40 Turbo Hydra-Matic 400 identified by a 1974 OX tag and a car-matching VIN stamp.
1 linked car page.
Cutlass S two-door Colonnade coupe converted by Hurst Performance
380 W-30 coupes from 1,800 regular-production Hurst/Olds