Np205

[79crewcab]

Looking for information on finding np205 with 6 bolt round pattern and long input is there a year range or model to look for when trying to fine one?

 

[Strick]

Sounds like one for a TH400.

HS

 

[nvrenuf]

All 85+ GM 205’s are the round pattern, long input like you want but they were only used in 1 tons (but not all 1 tons).

84 and older tcases were figure 8 with a short input.

 

[79crewcab]

Thanks for the information if anybody knows of 1 around Minnesota let me know

 

[Bextreme04]

Thanks for the information if anybody knows of 1 around Minnesota let me know

They are rare and stupid expensive when you find them. What trans are you using? Looks like you have a 6.0 LS swap, did you put a 4L80 in with that? I just used a 3/4" adapter ring to convert the 4L80 index ring to a TH400 index ring size and then used a 6" long 2wd output shaft in my 4L80 cut down to the same ~4.75" long output as the TH400 it was replacing.

 

[SquareRoot]

Years ago I found a guy on another site that was selling NOS cases. He had a company that converted new trucks into emergency vehicles (ambulances, Fire Dept., etc.). He got out of the business and was selling off his stock. He had about a dozen NOS cases. I bought a brand new 6 bolt round case for $300. Pricey at the time but I was putting it behind a NV4500. In hindsight, I wish I'd bought every one he had for $300.

 

[79crewcab]

I have 2 79 crew cab 1 tons one is 4wd and one is 2wd I'm doing a ground up restoration on the 4wd at this time while doing 6.0l lq4 with a rebuilt by me 4l80e and was going to use the 205 for the gear drive due to running 35-13.5r22 don't wanna break a chain in a 241c and was going to use a advanced adapter spacer to adapt

 

[bucket]

I have 2 79 crew cab 1 tons one is 4wd and one is 2wd I'm doing a ground up restoration on the 4wd at this time while doing 6.0l lq4 with a rebuilt by me 4l80e and was going to use the 205 for the gear drive due to running 35-13.5r22 don't wanna break a chain in a 241c and was going to use a advanced adapter spacer to adapt

A 208 or 241 will hold up just fine with 35's, especially on the street.

 

[79crewcab]

I know the chain drives are strong but i plan on using as a tow rig and pull goose neck around the farm so a gear drive would be best for reliability just my opinion

 

[bucket]

I know the chain drives are strong but i plan on using as a tow rig and pull goose neck around the farm so a gear drive would be best for reliability just my opinion

It certainly isn't a bad thing to have a 205, but even for those uses, a 208 or 241 will be just fine. But if you want the 205 just to be safe, I ain't gonna argue. I'd be looking at doing the same thing, lol.