Drive Shaft Help, 1 or 2 Piece? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Yukon 400 · 01-13-2011, 03:27 AM

I was wondering if you guys have any advice for choosing a drive shaft, right now there is just under 6 inches between the transfer case tail housing and the front of bearing support from the original two piece drive shaft. Th plans would be to run a drive shaft with double cardan joint, I know it's best to locate the joint at the same pivot location as the suspension which should be on the rear side of the bearing support, the question is how to get the joint in that location.

The solutions would be:

1. Run a two piece drive shaft with standard slip yoke, bearing support, with a very sort intermediate shaft.

2. Run a one piece drive shaft and new cross member with the joint located in front of the suspension pivot.

3. Run a one piece drive shaft and relocate the cross member forward and make some longer trailing arms to relocate the suspension pivot location

4. Relocate the engine and tranny further back to place the joint in the ideal location.

I just wanted to get some of your thoughts on which solution would be best or if there is another viable resolution to the problem, thanks.

Yukon 400 · 01-13-2011, 09:15 PM

Any thoughts?

Willys47 · 01-13-2011, 10:13 PM

1 or 2 Piece? I think there is only room for a one piece there.

Yukon 400 · 01-13-2011, 10:26 PM

My problem is that the double cardian should be on the back side of the cross member where the trailing arms are attached to, or figure a way to get the two in the same location. The truck will be riding on air bags with a good amount of travel, so it would be nice to avoid vibration problems down the road.

Willys47 · 01-14-2011, 12:02 AM

take the steady bearing mount of the cross member and do a test fit it may just be enough room after the slip yolk for the carden to be happy.

jmlcolorado · 01-14-2011, 12:25 AM

I just saw a post on here where a guy driving a lowered burb was running a 1 piece. He just removed the carrier bearing and the drive shaft cleared fine.

Maybe a test with some string with the bags in the highest and lowest position to see if you can clear without having to do a second piece?

Yukon 400 · 01-14-2011, 02:27 AM

Quote:

Originally Posted by jmlcolorado

I just saw a post on here where a guy driving a lowered burb was running a 1 piece. He just removed the carrier bearing and the drive shaft cleared fine.

Maybe a test with some string with the bags in the highest and lowest position to see if you can clear without having to do a second piece?

jmlcolorado Would you happen to remember who that was? Thanks.

It clears now, I had to elevate the tranny mount so a drive shaft would not hit the cross member at full droop.

01-13-2011, 03:27 AM	#1
Yukon 400 Registered User Join Date: Oct 2010 Location: Las Vegas, NV Posts: 68	Drive Shaft Help, 1 or 2 Piece? I was wondering if you guys have any advice for choosing a drive shaft, right now there is just under 6 inches between the transfer case tail housing and the front of bearing support from the original two piece drive shaft. Th plans would be to run a drive shaft with double cardan joint, I know it's best to locate the joint at the same pivot location as the suspension which should be on the rear side of the bearing support, the question is how to get the joint in that location. The solutions would be: 1. Run a two piece drive shaft with standard slip yoke, bearing support, with a very sort intermediate shaft. 2. Run a one piece drive shaft and new cross member with the joint located in front of the suspension pivot. 3. Run a one piece drive shaft and relocate the cross member forward and make some longer trailing arms to relocate the suspension pivot location 4. Relocate the engine and tranny further back to place the joint in the ideal location. I just wanted to get some of your thoughts on which solution would be best or if there is another viable resolution to the problem, thanks.

01-13-2011, 09:15 PM	#2
Yukon 400 Registered User Join Date: Oct 2010 Location: Las Vegas, NV Posts: 68	Re: Drive Shaft Help, 1 or 2 Piece? Any thoughts?

01-13-2011, 10:13 PM	#3
Willys47 Registered User Join Date: Dec 2007 Location: Nanaimo B.C. Posts: 604	Re: Drive Shaft Help, 1 or 2 Piece? 1 or 2 Piece? I think there is only room for a one piece there. __________________ I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!!

01-13-2011, 10:26 PM	#4
Yukon 400 Registered User Join Date: Oct 2010 Location: Las Vegas, NV Posts: 68	Re: Drive Shaft Help, 1 or 2 Piece? My problem is that the double cardian should be on the back side of the cross member where the trailing arms are attached to, or figure a way to get the two in the same location. The truck will be riding on air bags with a good amount of travel, so it would be nice to avoid vibration problems down the road.

01-14-2011, 12:02 AM	#5
Willys47 Registered User Join Date: Dec 2007 Location: Nanaimo B.C. Posts: 604	Re: Drive Shaft Help, 1 or 2 Piece? take the steady bearing mount of the cross member and do a test fit it may just be enough room after the slip yolk for the carden to be happy. __________________ I was hooked on these trucks since 1982 when I drove my budys fathers 1968 Custum GMC 396 automatic dana 60 rear with a power lock diff what a ride more fun then we will we can ever tell!!

01-14-2011, 12:25 AM	#6
jmlcolorado Registered User Join Date: Dec 2010 Location: Elbert county, CO Posts: 249	Re: Drive Shaft Help, 1 or 2 Piece? I just saw a post on here where a guy driving a lowered burb was running a 1 piece. He just removed the carrier bearing and the drive shaft cleared fine. Maybe a test with some string with the bags in the highest and lowest position to see if you can clear without having to do a second piece?



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