How to get 1500+HP
Old school as usual, I will raise you one UP 4012 Big Boy.
Max HP - 6290
Tractive Effort - 135,375 LBF
Max Speed - 80 plus MPH
Combined Locomotive and Tender Weight - 1,250,000 pounds
Weight on Drivers - 540,000 Pounds
All of "THIS" "SHOULD" get the job done.