Install a transfer case backwards?
Here I come with another dumb idea.
I just got done reading about the guy who ecomodded the Austin-Healey way back in the day with a second transmission hooked up backwards, and it got me thinking: Could I put a transfer case on a 4wd pickup backwards and get a massive overdrive? The 4-Low is something like 4 or 5:1 as just a wild guess, which backwards could give somewhere in the realm of .20:1 to the rear differential. This would allow a really low rear gear set to be used in this configuration for cruising, but throw it into normal mode for really good pulling.
The only thing I doubt is if the transfer case itself could handle the high internal RPMs.
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