Different manual transmission ratios vs axle gearing

V

Vinman

TJ Enthusiast
Joined
Sep 20, 2018
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Location
Calgary, Alberta
So I was bored and put together a list of crawl ratio differences between the AX15, NV3550 and NSG370.
Below is the crawl ratios for each gear position using 4.88 axle ratio for the AX15 and NV3550 then 4.10 ratio for the NSG370

AX15- 1st, 18.69, 2nd, 11.37, 3rd, 7.02, 4th, 4.88, 5th, 3.86

NV3550 1st, 19.72, 2nd, 11.37, 3rd, 6.73, 4th, 4.88, 5th, 3.80

NSG 370 1st, 18.28, 2nd, 10.70, 3rd, 7.05, 4th, 5.13, 5th, 4.1, 6th 3.44

So basically in a nutshell, If you have a 6 speed with 4.10 gears and treat it like a 5 speed the performance will be very close to the AX15 or NV3550 with 4.88 gears.

Something to consider if you are thinking of regearing to 4.88’s with the 6 speed
 
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That's very cool you put this together, and every interesting as well! I'm going to move this to the TJ Resources sub-forum, since I think it's worthy of being a "resource".
 
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I run the NSG370 with 4.56 gears and 33’s and I believe my crawl ratio is 64:1. I love it!
 
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