68 Transfer Case Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Fatback · 09-01-2005, 09:23 PM

I am in the process of putting the transmission/transfer case in my GMC. When I bought the truck it was dissassembled ......so, I'm trying to figure it out. If anyone has pictures or diagrams of how and where the linkage goes I would sure appreciate the info. Transmission is a 3-speed and t/c is a Rockwell. This thing was a mess when I got it, I have found most of the linkage....at least I think so. I just need the know if I have all the nessesary parts to finish it.

1969 GMC · 09-01-2005, 11:33 PM

I don't know how different my old setup was, but I had a SM465 4 speed married to the Rockwell. It had a two piece stamped steel bracket bolted to the adapter housing, and the shift lever pivoted on the bracket. I can try to find a pic of it.

Fatback · 09-02-2005, 07:31 AM

Thanks Adam, That sounds like what I have. If by chance you have a picture,that would be a big help.

1969 GMC · 09-02-2005, 08:44 AM

Lo and behold, I actually uploaded the pics I took of the adapter to my yahoo photo page (in my profile). Here is a link to my transfer case swap page, the adapter pics are towards the end:click

**Yukon Jack** · 09-02-2005, 10:05 AM

Here are a few pics I have showing the linkage.

Fatback · 09-02-2005, 10:38 PM

Thanks for the pics!!! I did a mock up the other night, and had it right. I just needed to know if there was some sort of bushing missing ...especially on the bolt where the shifter connects to the lever on the t/c. Best I can tell from the pictures, there isn't one there. Again Thanks!!!

Fatback · 09-04-2005, 11:25 AM

I have a big leak. I have oil coming from up in the T/C mount while the engine is running. Other than there being a crack, Why would oil be coming out from up in there??

**Yukon Jack** · 09-04-2005, 04:10 PM

Not sure I understand where it is leaking. Is it coming out the side of the case where the bracket attaches to the t/c and the frame? I'm pretty sure those are blind holes so doesn't sound good.

Fatback · 09-05-2005, 09:39 PM

There appears to be 2 seals in the "adapter" for a 3 speed. I just had the one by the transfer case. Thanks for the help.

09-01-2005, 09:23 PM	#1
Fatback Registered User Join Date: Dec 2003 Location: North Central FL Posts: 126	68 Transfer Case Question I am in the process of putting the transmission/transfer case in my GMC. When I bought the truck it was dissassembled ......so, I'm trying to figure it out. If anyone has pictures or diagrams of how and where the linkage goes I would sure appreciate the info. Transmission is a 3-speed and t/c is a Rockwell. This thing was a mess when I got it, I have found most of the linkage....at least I think so. I just need the know if I have all the nessesary parts to finish it. __________________ 70 C/10 LWB 69 Cougar 68 Mustang 68 GMC 4X4 SWB

09-01-2005, 11:33 PM	#2
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	I don't know how different my old setup was, but I had a SM465 4 speed married to the Rockwell. It had a two piece stamped steel bracket bolted to the adapter housing, and the shift lever pivoted on the bracket. I can try to find a pic of it. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

09-02-2005, 07:31 AM	#3
Fatback Registered User Join Date: Dec 2003 Location: North Central FL Posts: 126	Thanks Adam, That sounds like what I have. If by chance you have a picture,that would be a big help. __________________ 70 C/10 LWB 69 Cougar 68 Mustang 68 GMC 4X4 SWB

09-02-2005, 08:44 AM	#4
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Lo and behold, I actually uploaded the pics I took of the adapter to my yahoo photo page (in my profile). Here is a link to my transfer case swap page, the adapter pics are towards the end:click __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

09-02-2005, 10:05 AM	#5
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Here are a few pics I have showing the linkage. Attached Images __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

09-02-2005, 10:38 PM	#6
Fatback Registered User Join Date: Dec 2003 Location: North Central FL Posts: 126	Thanks for the pics!!! I did a mock up the other night, and had it right. I just needed to know if there was some sort of bushing missing ...especially on the bolt where the shifter connects to the lever on the t/c. Best I can tell from the pictures, there isn't one there. Again Thanks!!! __________________ 70 C/10 LWB 69 Cougar 68 Mustang 68 GMC 4X4 SWB

09-04-2005, 11:25 AM	#7
Fatback Registered User Join Date: Dec 2003 Location: North Central FL Posts: 126	another problem.... I have a big leak. I have oil coming from up in the T/C mount while the engine is running. Other than there being a crack, Why would oil be coming out from up in there?? __________________ 70 C/10 LWB 69 Cougar 68 Mustang 68 GMC 4X4 SWB

09-04-2005, 04:10 PM	#8
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Not sure I understand where it is leaking. Is it coming out the side of the case where the bracket attaches to the t/c and the frame? I'm pretty sure those are blind holes so doesn't sound good. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

09-05-2005, 09:39 PM	#9
Fatback Registered User Join Date: Dec 2003 Location: North Central FL Posts: 126	I think we figured it out. There appears to be 2 seals in the "adapter" for a 3 speed. I just had the one by the transfer case. Thanks for the help. __________________ 70 C/10 LWB 69 Cougar 68 Mustang 68 GMC 4X4 SWB



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