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Cummins 380 Upgrades

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Sgt. Schultz

RVF Newbee
Joined
Jun 26, 2026
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Hi everyone. Can you tell me what you know about taking the Cummins 380hp up to 450hp. It has the Allison 3000. Fleetwood chassis, Discovery LXE 40E. Would like a little extra umph for towing.
Our local shop claims a Cummins factory authorized dealer will up-tune it with the Allison and warranty. Thx!
 

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