Long LOUD Jake Engine Brake

Logging truck bombing down NC hwy 221. This particular stretch of 221 has a very long, steep and winding incline. I was behind him for about 5 minutes at a snails pace prior to taking this video until he kindly moved over when given the opportunity to let the line of cars behind him pass. Decided to pull off at the first safe opportunity and attempt at getting a video of his engine brake. My little baby 3 liter v6 doesnt make near the noise that massive inline 6 does going down hills :(