WAP4 - WIDE A/C (POWER) FOR PASSENGER 4X1000HP...
WAM4 - WIDE A/C(POWER) FOR MIXED (PASS&GOODS) Transport 4X1000HP
Both are having same pulling power. WAMs have been converted into WAPs now a days where Goods trains have been now a days pulled using WAG's (Wide A/C for Goods)...
Admins- could anyone please update this in FAQ. (If already exists pls ignore)..