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VIN 1M1AK07Y87N023744 Can anyone tell me how much horsepower I have? It feels like the engine gives up going up a hill. There are a couple hills I go up several times a day that I end up in the low side of 6th before I stop losing speed. My boss gave me the ok to get a rerate. I found a thread on here with different options like the 460XT or the 427. I've got the Eaton 13spd but do not know the gear ratio of the rearends. I gross 86000 pulling a belt trailer. I would like to hear some opinions on what you guys think would ne the best option for the rerate

Thanks,

Brent

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Thanks macktech. The tag on the engine has the engine serial # and valve clearances but that's it. It's a Remack. I'll have to check with my boss to see when it was put in but I do know the local freightliner dealer rebuilt it 2 months ago. Hopefully I'll have time to get into Mack this week to get checked out

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As Macktech689 siad its a 460P, Back on 5/3/11 it was at a dealer and have the software and data files in the ECM's updated. Should pull pretty good when running correctly. Whats your turbo boost pressure under a load? We usually see around 33psi on one that runs as it should.

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  • 2 weeks later...

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