NP 205 Vs. Rockwell T221 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

be_el · 08-15-2008, 12:07 PM

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

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

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

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

jay_shy · 08-17-2008, 12:15 PM

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

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

Quote:

Originally Posted by be_el

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

They did??

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

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

1969 GMC · 08-19-2008, 05:01 PM

Quote:

Originally Posted by be_el

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

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

Quote:

Originally Posted by newbraunie

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

Quote:

Originally Posted by newbraunie

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

SM465 connected to NP205 transfer case

griesel72 · 09-02-2008, 11:57 AM

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

Quote:

Originally Posted by be_el

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

Quote:

Originally Posted by padresag

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

Quote:

Originally Posted by griesel72

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

Quote:

Originally Posted by Blazer1970

The NP202 was never used in any GM vehicle afaik.

yup, the 202 was only dodge/ih.

padresag · 09-02-2008, 07:36 PM

Quote:

Originally Posted by Blazer1970

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

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

08-15-2008, 12:07 PM	#1
be_el Registered User Join Date: Apr 2005 Location: Texas Posts: 10	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? __________________ Be_eL 1969 Chevy K/20

08-15-2008, 06:05 PM	#2
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	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. __________________ Tim

08-17-2008, 11:11 AM	#3
be_el Registered User Join Date: Apr 2005 Location: Texas Posts: 10	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. __________________ Be_eL 1969 Chevy K/20

08-17-2008, 11:35 AM	#4
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: NP 205 Vs. Rockwell T221 my 68 4 speed has a rockwell... I don't think the 205 was until 69. __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

08-17-2008, 12:15 PM	#5
jay_shy SWB 4X4 CLUB Join Date: Feb 2005 Location: PA Posts: 1,088	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

08-17-2008, 05:57 PM	#6
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	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. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

08-18-2008, 12:53 PM	#8
be_el Registered User Join Date: Apr 2005 Location: Texas Posts: 10	Re: NP 205 Vs. Rockwell T221 Not saying it's the Gospel, just what one publication I ran across said. __________________ Be_eL 1969 Chevy K/20

08-31-2008, 12:08 PM	#10
newbraunie Registered User Join Date: Aug 2008 Location: Central TX Posts: 393	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?

09-02-2008, 11:57 AM	#13
griesel72 Senior Member Join Date: Apr 2003 Location: Howard, Kansas USA Posts: 1,997	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 __________________ 1969 K10 Custom 10 1997 Z71 2006 Volkswagen Jetta TDI 2006 King Ranch 1980 Wife

05-04-2016, 02:41 PM	#19
infinite-foamies Registered User Join Date: Apr 2014 Location: Northport, NY Posts: 162	Re: NP 205 Vs. Rockwell T221 Will a Chevy NP205 bolt up to an SM465 in place of a T221?

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