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ISX Model 385ST - Retrocrazy - 09-30-2024
In the market for used class 8 box truck. Will be driven on west side of the country, so steep grades will be a concern. Looking at one with a ISX model 385ST and a 10sp Eaton Ultra Shift trans. Best I can tell that model did not come with an engine brake. Just curious how much exhaust braking the VGT turbo will offer and will it be enough to hold back this truck when fully loaded on 7% grades?