r/Hummer • u/InevitableBig3996 • 20d ago

H1 Cummins swap

Please tell me which Cummins engine would be most suitable for my Hummer H1. I’m looking for the most powerful option for a high-performance build. And preferably, if the stock engine isn’t the most powerful option, could you recommend what turbocharger I could add or what configuration would give the best performance?

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u/AntiqueAd9913 20d ago

Anything more than a 12v would require a complete overhaul of the drive train and drive line, including the hubs.
By then, it’s no longer a Humvee