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-   -   NP205 Issue (https://67-72chevytrucks.com/vboard/showthread.php?t=799411)

Honest Bob 01-11-2020 01:09 PM

NP205 Issue
 
This is bad right?

https://www.youtube.com/watch?v=64DhfwLOmeE

My truck feels like its chained to a boulder, like maybe the e brake is stuck on but its not (rear brakes are not getting hot at all).

kwmech 01-11-2020 04:45 PM

Re: NP205 Issue
 
Nope..totally normal. When you bolt on the adapter it will retain the bearing and center up the gear inside.

As far as 'being chained to a boulder' what does that imply??

Honest Bob 01-11-2020 06:49 PM

Re: NP205 Issue
 
Quote:

Originally Posted by kwmech (Post 8658024)
Nope..totally normal. When you bolt on the adapter it will retain the bearing and center up the gear inside.

As far as 'being chained to a boulder' what does that imply??

Ok so I combined two trucks into one along with an ls swap. 4.8 LS with a cam, th400 with stock torque converter, and an np205. The motor itself runs great however it seems like something in the drive train is holding the truck back.

It does not coast as freely down a slight incline as both of the other trucks did before they were sacrificed. The drag increases gradually as the truck warms up and eventually reaches a point where the motor will stall when the trans is put in reverse and drive (reverse is worse for some reason). The pump on the th400 is whining a little, so I guess that could be it but it did that in the other truck before the swap.

Last time I drove it around the block it got so bad that the starter wasnt able to turn the motor over anymore even in park.

I have unbolted the torque converter and it slides back and forth with the required 1/8" space and spins easily.

I'm at the point where I'm tearing it back apart to see if I can find any evidence.

Getter-Done 01-11-2020 06:55 PM

Re: NP205 Issue
 
Have you put the truck on jack-stands and tried turn all 4 wheels while truck is in neutral?







.

Honest Bob 01-11-2020 07:18 PM

Re: NP205 Issue
 
Quote:

Originally Posted by Getter-Done (Post 8658084)
Have you put the truck on jack-stands and tried turn all 4 wheels while truck is in neutral?

I have in on jackstands now and the rear tires roll free. I dont have a front driveshaft that will fit at the moment, but those move free as well.

I have drained the trans fluid and there is alot of clutch material in it, especially for only having drivin around the block twice.

Getter-Done 01-11-2020 07:21 PM

Re: NP205 Issue
 
Quote:

Originally Posted by Honest Bob (Post 8658092)
I have in on jackstands now and the rear tires roll free. I dont have a front driveshaft that will fit at the moment, but those move free as well.

I have drained the trans fluid and there is alot of clutch material in it, especially for only having drivin around the block twice.

Sounds like you found the culprit.






.

SunSoaked 01-11-2020 09:57 PM

Re: NP205 Issue
 
Time to rebuild the trans. Something wasn't releasing...hence the feeling of being chained to a boulder.


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