89D21Dude Posted November 2, 2024 Share Posted November 2, 2024 So I don't have a Pathfinder, but I have a transmission from one. From a 97 2wd, specifically. I swapped it in place of the old auto in my 88 Hardbody. I have a few questions about this transmission. One of which will have to wait until I can upload pics (sensor locations), and my other question is just what gearing does this 30A trans have compared to other 2WD 30A's. It seems my 5th gear is only slightly taller than 4th.. Link to comment Share on other sites More sharing options...
Slartibartfast Posted November 2, 2024 Share Posted November 2, 2024 The '97 R50 FSM (free download from Nicoclub) shows these ratios: 1 3.580 2 2.077 3 1.360 4 1.000 5 0.881 Reverse 3.636 The '90 FSM (free download from cardiagn.com) lists different ratios in first and second for the 2WD and 4WD slushboxes. For 2WD (four-cylinder or V6): 1 2.785 2 1.545 3 1.000 4 0.694 Reverse 2.272 Looks like your overdrive with the manual is much less aggressive than the overdrive in the slushbox that you swapped out. This is likely why the 4WD trucks tend to have 4.3 ring and pinion gears with the manual, 4.6 with the auto. What's your axle ratio? Should say on the tag in the engine bay, by the wiper motor. HG something. The '97 trans will have a speed sensor rather than the speedo cable drive you need for the '88 (assuming you haven't done a round-dash swap). I assume you could fit the speedo cable drive from the old trans to the new one, though I have heard that they can be a bugger to remove. Be very careful with the gear on the end, sounds like they're not fun to track down replacements for. 1 Link to comment Share on other sites More sharing options...
89D21Dude Posted November 8, 2024 Author Share Posted November 8, 2024 Thank you for that info!! And these are the sensors in question. One is reverse lights, one is speedo, the other is something lol Link to comment Share on other sites More sharing options...
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