Please tell me:
* What engine does your truck have? (It could be a 5.9L Cummins ISB, a 8.3L Cummins ISC, or a different engine.)
* What is the specific model of your 3500? (For example, a 3500 SLT, 3500 Laramie, etc.)
Once I have this information, I can provide you with the horsepower rating of your truck's engine.