Join Date: Jan 2002
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Re: Unimog reach 80 mph?
in the 404 Unimogs - no, although an M130 engine conversion w/ turbo might get you up to 75mph or so, it'd be at ballistic rpms.
starting with the U1100 series ( 406/416's), there was a 'high speed' gearset available for use in firefighting rigs, etc. no idea of cost, or availability, but they do exist - I think top speed on a 5.7 diesel w/ high speed gearset was ~85, or 90 mph.
for details on the high speed box, try the 'Unimog forever' website - he has the complete drivetrain ratios for the 404, 406, and 416 models available on his site, including the granny, and crawler cascade boxes for each model.