Great capture MeghA***
Just going thru engine parameters of WDM3A&WDG3A loco in IR
WDG length is slightly long by 2metres
Starting Traction torque maX is 30.4T vs 37.8 T
Idle RPM...
more... 400 vs 350
Gear ratio. 65:18 vs 74:18
Tank capacity 5000 Ltr vs 6000 ltrs
Max speed 120. Vs 100
Loco capacity HP is same -3100