I ask this question when I first got mine on the road as well. There are a number of things that must be done before you think about going faster.. Brakes must be upgraded. These trucks were not meant to go fast. They simply do not have enough power behind them. I use a 46 2-ton for my business. It gets plenty of weight on the back. Empty I can run 55.. Pushing it to low 60's every once in a while. I am still running the splashed 235 4 speed trans and single speed rear end. I did however make disc brakes for the front. It stops and stops well.
Don't expect highway speeds without upgrading the stopping power first! Then you will need to increase the power just a little bit, then figure out gearing to accommodate!
What did you do to get more power?
