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What's the difference between a B, C, electronic C, and M-11 Cummins?
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Denis, the B is 5.9L, C is 8.3L and M-11 is an 11L engine. As the saying goes, there is no replacement for displacement. Bigger is better. Assuming it has the best codes in the ECM, the electronic engines will give better fuel mileage and more torque than it's non computerized brother. We have power upgrades for the above mentioned engines with the exception of the M-11. Just bite the bullet and buy one of those 40' RV's with the slide outs and equip it with a 500 Detroit. I can turn that up too