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- - NP 205 Vs. Rockwell T221 (https://67-72chevytrucks.com/vboard/showthread.php?t=303042)

be_el

08-15-2008 12:07 PM

NP 205 Vs. Rockwell T221

From what I have found out, it appears that in 1969 both of these transfer cases were available in Chevy/GM trucks. My question is was this some sort of mid-year change or were there specific applications where one was used instead of the other?

Blazer1970

08-15-2008 06:05 PM

Re: NP 205 Vs. Rockwell T221

Mid year change, but the 221 was never offered behind an automatic trans. '69 was the first year you could get an automatic 4X4 from GM.

be_el

08-17-2008 11:11 AM

Re: NP 205 Vs. Rockwell T221

I found out yesterday that Chevy started using the NP 205 in 1967 while GMC continued with the Rockwell through 1969.

msgross

08-17-2008 11:35 AM

Re: NP 205 Vs. Rockwell T221

my 68 4 speed has a rockwell... I don't think the 205 was until 69.

jay_shy

08-17-2008 12:15 PM

Re: NP 205 Vs. Rockwell T221

My truck is the same as MSGROSS. It has a sm465 tranny and a 221 rockwell transfer case. Almost forgot but it is a 68 chevy.

Jason

Yukon Jack

08-17-2008 05:57 PM

Re: NP 205 Vs. Rockwell T221

I have yet to see an NP205 in anything older than a 1969, not saying it didn't happen, just haven't seen one.

68,69 K20

08-18-2008 05:21 AM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by be_el (Post 2852140)

I found out yesterday that Chevy started using the NP 205 in 1967 while GMC continued with the Rockwell through 1969.

They did?? :confused: I don't believe that is correct. Both my 68 and 69 are Chevy and both have Rockwells.

be_el

08-18-2008 12:53 PM

Re: NP 205 Vs. Rockwell T221

Not saying it's the Gospel, just what one publication I ran across said.

1969 GMC

08-19-2008 05:01 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by be_el (Post 2853560)

Not saying it's the Gospel, just what one publication I ran across said.

It was incorrect. The NP205 was first made in 1969.

My GMC originally had a Rockwell behind a 465 but hands down the 205 is a better t-case in every conceivable way.

newbraunie

08-31-2008 12:08 PM

Re: NP 205 Vs. Rockwell T221

I recently purchased a 69 Chevy 4X4 1/2 ton truck w/ 4 speed trans. What is the best way to tell what tranny and transfer case it has?

msgross

08-31-2008 12:27 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by newbraunie (Post 2870615)

I recently purchased a 69 Chevy 4X4 1/2 ton truck w/ 4 speed trans. What is the best way to tell what tranny and transfer case it has?

send us a picture... or search for pics on here or google. They look different

Yukon Jack

08-31-2008 01:47 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by newbraunie (Post 2870615)

I recently purchased a 69 Chevy 4X4 1/2 ton truck w/ 4 speed trans. What is the best way to tell what tranny and transfer case it has?

This might help you:

SM465 (4 speed manual) connected to Rockwell T221 transfer case

http://yukon.b0xen.us/69chevy/rockwellinfo.jpg

http://yukon.b0xen.us/69chevy/rockwellt221a.jpg

SM465 connected to NP205 transfer case

http://yukon.b0xen.us/69chevy/np205info.jpg

http://yukon.b0xen.us/misc/np205.jpg

griesel72

09-02-2008 11:57 AM

Re: NP 205 Vs. Rockwell T221

can't you tell by the way the stick is, a 205 is more to the passenger side of the hump, and a rockwell is on the driver's side of the hump, and my rockwell shifts different, also

padresag

09-02-2008 01:13 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by be_el (Post 2852140)

I found out yesterday that Chevy started using the NP 205 in 1967 while GMC continued with the Rockwell through 1969.

I believe that it was a NP202 that was also used in 67 - 68; a 205 came out in 69
ron

Blazer1970

09-02-2008 05:15 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by padresag (Post 2873383)

I believe that it was a NP202 that was also used in 67 - 68; a 205 came out in 69
ron

The NP202 was never used in any GM vehicle afaik.

Blazer1970

09-02-2008 05:17 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by griesel72 (Post 2873278)

can't you tell by the way the stick is, a 205 is more to the passenger side of the hump, and a rockwell is on the driver's side of the hump, and my rockwell shifts different, also

Early GM 205 applications had a shifter that bent over the top of the adapter and came up on the drivers side. This may have been '69 - '70 only.

1969 GMC

09-02-2008 06:52 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by Blazer1970 (Post 2873739)

The NP202 was never used in any GM vehicle afaik.

yup, the 202 was only dodge/ih.

padresag

09-02-2008 07:36 PM

Re: NP 205 Vs. Rockwell T221

Quote:

Originally Posted by Blazer1970 (Post 2873739)

The NP202 was never used in any GM vehicle afaik.

I found this not to long ago and if memory serves me , I saw this on an earlier thread here that had a lot of info on transfer cases and adapting to automatics. it was quite an extensive thread. maybe it goes to say that one shouldn't take for granted what is quoted in these forums.
I do run an independent 205 in my 64 behind a 5 spd. my 205 came out of an IHC Scout and also had one from a dodge(just the yokes are different) but both are r/side mount
ron

infinite-foamies

05-04-2016 02:41 PM

Re: NP 205 Vs. Rockwell T221

Will a Chevy NP205 bolt up to an SM465 in place of a T221?

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