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91 mack dm tri axle dump with 300 horse

luke andres

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so I pulled the 2080 mack tranny out of my 1991 dm tri axle dump and put in a eaton 8LL since my eaton 13 speed mysteriously "walked off"     I'm actually glad thou since the 8LL is more of a dump tranny and the 13 being more for road tractor      I also went from 5:73 to 4:42 rears       Love the difference now and wasn't a bad job to do      Had to shorten drive shaft 3 inches        Now I would like to get a few more horses out of this 300 engine     It has a bosch p7100 all mechanical pump        Any helpful advice would be nice to get        I also have a 94 ch road tractor that is a parts truck with a good 350 engine in it but it has a fuel pump that has electric wires going to it        Not sure if I would be able to just change the turbo and injectors and bump the timing or not          Anyone know        Thanks        

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