NP205 Pops out of low

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Honest Bob

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Easton PA
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Ben
Truck Year
1975
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K30
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LS 4.8
I have a 32 spline figure 8 np205 mounted to a 4l80e using a nwfab 4l80e adapter, and a twin stick including new modified shift rails from jbcustom that keeps popping out of low (4x4 low and rear low, I havent tried fwd low). It is my first attempt at rebuilding an np205, I put in new bearings, seals, and shift collars. I suspect the teeth on the gears where the shift collars go on are worn out. I dont know the origin of the np205 but I suspect it had a hard life.

Opinions? Can I still get all these parts or do I need to start looking for a replacement?

Are the internal parts the same between a round pattern and a figure 8 np205?

I have a spare round pattern 91 np205 with the 4l80e adapter. I could use that tcase but I am afraid Im gonna have to have driveshaft lengths modified again.

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MarineOne

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Teeth don't look horrible. Have you tried unhooking shift linkage and putting it in low manually from underneath?
 

Honest Bob

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i have not tried that! Thanks for the tip.
 

GTX63

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I had a similar issue on a 203 and it was also the linkage. Soaked it in PB Blaster until I could free it up and then worked it back and forth everyday for a few weeks. The truck had been sitting outside for years.
 

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