Engine Identification
Engine identified by a letter code stamped below the engine production number on front of block, just below right hand cylinder head. The sixth digit of the Vehicle Identification Number (located on top of instrument panel and visible through windshield) designates model year.
Engine Code Letters
| Engine |
Synchro-mesh |
Auto. Trans. |
| 350" 255 HP |
WU, W7 |
YU, X7 |
| 400" |
265 HP |
|
XX, YB |
| 290 HP |
WE |
YD |
| 330 HP |
WT |
YS, XV, XZ |
| 345 HP Ram Air III |
WS |
YZ |
| 350 HP |
WT, WX |
YS, XH |
| 366 HP Ram Air III |
WS |
YZ |
| 370 HP Ram Air IV |
WW |
XP |
| 370 HP Ram Air Super Duty |
WH |
XN |
| 455" |
360 HP |
|
YH |
| 370 HP |
WA, WG |
YC, XF |