Any trouble with np205 slip yoke style?

[Ned Kelly]

So I've been running a slip yoke NP205 for nearly 20 yrs now. Mud/snow/DD truck. Just 4" lift, nothing really flexy. It's an old school setup with stock springs and lift blocks in the back - no axle hop. Just wondering, have guys had problems with NP205's in slip yoke configuration? Is this just fellows with flexy suspension or very low geared (doublers)?

 

[Blazr77400]

I ran the slip yoke 205 on my Doubler equipped Unimog axled truck on 42's with no problems what so ever.
I think hitting the slip yoke is probably what does it.

 

[dyeager535]

Assuming the 205 is like the 208/241 with slip yokes, you lose a u-joint, (for hardcore guys, bent driveshaft, broken yoke, you name it) you are kind of screwed because you can't keep fluid in the t-case if you pull the shaft.

 

[onetonbb74]

unless you have a ziplock bag and duct tape.

 

[Xtremegmc80]

yeah. almost all 1980 205 is a slip type. i got one in my 80 gmc, i never cried abt tranny fluid coming out when i take the shaft out. i usually used bigger kind of sandwinch bag and a duct tape to catch any drips while it doesnt have a shaft in. i just lifted my truck 6 inch. but i havent flexed it out so i cant tell u more.

 

[onetonbb74]

slip yoke 205's are fine unless you need all the driveshaft you can get, ie a blazer with a 104" wheelbase and a th400 doubler. The rear shaft is going to be short, so a bolt on yoke will make the shaft longer which in turn will be better angles on the driveline.

 

[Xtremegmc80]

slip yoke 205's are fine unless you need all the driveshaft you can get, ie a blazer with a 104" wheelbase and a th400 doubler. The rear shaft is going to be short, so a bolt on yoke will make the shaft longer which in turn will be better angles on the driveline.

sounds true. i got a long bed pick up truck so no issues for me. but for short wheelbase that sounds true. u could go to the junkyard or find a broken tcase of 205 and convert ur truck from slip to bolt on. i been meaning to do that but everything fits good so ill wait til something happens.

 

[Ned Kelly]

Should have mentioned mine is in a K30 pickup. Yeah, I could see a fixed yoke being better for short wheelbase. Like Extreme80GMC says, it works, so why fix it?

Interesting is that I have two k30's, both 1985 (th400's) , and both have slip yokes. I wonder when they stopped this slip yoke business?

 

[FOR MUD]

How much slip is there? I wonder if you can run into a problem of the shaft getting pulled all the way out or being pushed up into the case while flexing?

I read some where about cutting a plastic soda bottle in two and stuffing it into the case when you have to remove the shaft.

 

[habitatxskate]

if i were you, but the slip yoke eliminator kit some companies make!

 

[dyeager535]

Should have mentioned mine is in a K30 pickup. Yeah, I could see a fixed yoke being better for short wheelbase. Like Extreme80GMC says, it works, so why fix it?

Interesting is that I have two k30's, both 1985 (th400's) , and both have slip yokes. I wonder when they stopped this slip yoke business?

They actually never did stop the slip yokes, but depending on the truck you ended up with slip or fixed. According to the manuals, there is some difference based on auto or manual hubs, but IIRC, the auto hubs weren't available every year on the K30's.

 

[Ned Kelly]

My '85 did come with auto hubs originally, and slip yoke.