10/7/2023 0 Comments 855 big cam 350 turbo upgradeMost common complaints on it are the short life of the engine and needing a rebuild, usually cam failures. Towards the end of the small cam line Cummins offered a 400hp model. Eventually though it gets to where the fuel is just being flown into the cylinder instead of a mist, so poorly mixing with the air/incomplete combustion leading to less power and quickly rising EGT's. To a certain point you can get the fuel flow by using injectors with larger orifices and keeping the pressure at/below 200psi. Click to expand.Cam itself and possibly the crank bearings at those power levels.
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