happyhooker
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For those of you who do not know how a new engine works!
The newer engines do not run at the high rpm's like the old engines do. All of the mack engines are designed to run at their peak between 13 and 1500 rpms, unlike the old Detroit engines that run their best from 15 to 1800. This will give you 350hp. When you go any higher on the rpm's, the hp decreases by 10hp for every 100 rpm's you go above that. The trucks have all of the HP and Torque that they came from the factory with, you just need to learn how to drive it. The torque curve runs between 11 and 1400 rpms. If you shift the truck at a lower rpm, you will use more of the torque the engines has. It gives you 1460lbft of torque at 1100 rpm's. When they have cut the speeds back on the trucks, they have not cut the power away from it, they have made it so you can drive it to get the most power from it. The trucks were designed to run at their peak between 65 and 68mph. That is what they are geared for, not 72. I know taking 30 minutes more per day is coming out of your pocket, but the company has never had a lay off, and they have given raises every year for the last 5 or 6 years that I can remember. That should mean something, you could be working for someone like Jevic or Alvin....
The newer engines do not run at the high rpm's like the old engines do. All of the mack engines are designed to run at their peak between 13 and 1500 rpms, unlike the old Detroit engines that run their best from 15 to 1800. This will give you 350hp. When you go any higher on the rpm's, the hp decreases by 10hp for every 100 rpm's you go above that. The trucks have all of the HP and Torque that they came from the factory with, you just need to learn how to drive it. The torque curve runs between 11 and 1400 rpms. If you shift the truck at a lower rpm, you will use more of the torque the engines has. It gives you 1460lbft of torque at 1100 rpm's. When they have cut the speeds back on the trucks, they have not cut the power away from it, they have made it so you can drive it to get the most power from it. The trucks were designed to run at their peak between 65 and 68mph. That is what they are geared for, not 72. I know taking 30 minutes more per day is coming out of your pocket, but the company has never had a lay off, and they have given raises every year for the last 5 or 6 years that I can remember. That should mean something, you could be working for someone like Jevic or Alvin....