Jerry Graham's ISO tank-hauling 389

Jerry Graham's Peterbilt 389

Jerry Graham pulls heavy ISO tanks through the mountains of West Virginia with his tuned-up Peterbilt 389. The rig sports a 565-hp Cummins ISX tuned to 600 horsepower and 2,050 lb.-ft. of torque with a 13-speed and 3.55 rears. The drivetrain has been completely rebuilt and features a PDI oil cooler to keep temps down. Graham said he's looking to add more chrome to the truck in the near future, in the form of new tank skins, bumper, stacks and fenders.

[Related: Owner's 2016 Western Star pulls conestoga nationwide]

Click here to see more photos of reader uploads or to submit your own. 

For custom-equipment features delivered to your email inbox, subscribe to Overdrive's weekly Custom Rigs newsletter via this link.