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Old 04-01-2014, 04:04 PM   #1
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'89 yj stock manual trans to stock auto trans

Need help on if this trans will work in my 89 YJ. and what additional equipment besides a shifter i will need thanks


'89 wrangler YJ 258 6cylinder 6" lift with maxxis 35x12.5's

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Old 04-02-2014, 11:15 AM   #2
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You are changing from Manual to automatic? You will need the trasnmission, the torque converter, possibly a new flywheel, transmission lines and cooling, mechanical apparatus for transmission kick down ( attaches to accelerator ), the electrical connections for the tranmission, a different driveshaft and slip yoke. I'm probably missing a few things, but just so you have a ball-park . . . expensive. unless you have a donor jeep with everything :-)

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Old 04-13-2014, 03:40 PM   #3
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Thanks that gives me a great starting list.
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Old 04-13-2014, 04:16 PM   #4
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You will need a new flywheel, auto trans mount. I used the np231 transfer case that had the correct input gear for the auto trans.
I've done that swap on a jeep I bought for my wife.
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87 yj wrangler 4.2 258 inline 6. 4 inch kit p buck shots 8000 lb warn winch. 4.10 gears. Swaped in tf999.
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Old 04-13-2014, 06:47 PM   #5
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At this point I beginning to think i may just go with a chevy 400 turbo trans or 700R4. Will either of those work with my 258 6 Cylinder? Anybody.
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Old 04-13-2014, 08:33 PM   #6
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Search the internet for rock crawlers jeep yj manual to auto swap. Lots of info on swapping in a 700r4.

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87 yj wrangler 4.2 258 inline 6. 4 inch kit p buck shots 8000 lb warn winch. 4.10 gears. Swaped in tf999.
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