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#1 |
Registered User
Join Date: Nov 2002
Location: raleigh, NC
Posts: 60
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replacing the rag joint with a U-joint (spline counts)
Hey folks. I am wondering what the spline counts are on the 4WD box, 2WD box, and steering column.
I want to lose the rag joint on my 71 jimmy and would ideally just like to buy an entire borgeson collapsing shaft like this http://store.summitracing.com/partde...5&autoview=sku The problem is that I eventually plan on going to crossover steering and will be switching to a 2WD box and don't want a 200 shafting! Any info is appreciated. thanks, adam
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1971 GMC Jimmy 350/350/205/D60/14bolt on 38's 1984 M1008 CUCV 6.2/TH400/208/D60/14bolt on 36's 1991 W250 5.9/G360/205/D60/D70 on 33's (tow-rig) Lotsa Full Size Jeeps (J10/J20)! Adam Last edited by ajbirken; 08-15-2006 at 08:20 AM. |
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#2 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: replacing the rag joint with a U-joint (sline counts)
3/4 inch 36 spline x 3/4 inch DD. All shafts.
Just buy the u-joint unless it's for show. Stock shaft will collapse for fitment. http://67-72chevytrucks.com/vboard/s...light=borgeson
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#3 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: replacing the rag joint with a U-joint (sline counts)
My experince was on the steering column side only. Someone replied in my thread saying the box side is 30 spline.
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#4 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: replacing the rag joint with a U-joint (sline counts)
I'm adding a u-joint down where the rag joint was on my 69 K20 and it is 3/4" with 30 spline. This is a mid 70's power steering box but Borgeson said the 67-72's 4wd and the newer 4wd box like the one I'm using all were the same. I didn't ask him about 2wd boxes.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#5 |
Registered User
Join Date: Dec 2003
Location: West Michigan
Posts: 447
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Re: replacing the rag joint with a U-joint (sline counts)
I replaced the rag joint with a ujoint at the steering box on my 72 blazer, the spline size on the steering box is 13/16 30 spline. Here is a website that has sizes listed http://www.flamingriver.com/p_view_i..._Tech_Tips.gif
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1972 Chevy Blazer 1997 GMC Sierra 2009 Chevy Tahoe Last edited by orange72blazer; 08-15-2006 at 12:20 PM. |
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#6 |
Senior Member
Join Date: Feb 2006
Location: oregon city
Posts: 335
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Re: replacing the rag joint with a U-joint (sline counts)
I investigated this heavily bout 2 months ago and i got so much conterversy about whether we have 3/4 or 13/16 that i finally came to the conclusion you need to take it apart and measure. It's the only way to be sure. Also from the info i got i would look at the damperner as well.
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If it aint broke..............fix it till it is. www.fast77.com 1972 - 330 hp crate, 11" lift with 39x18 mickeys. 3/4 ton, cross steer, 4 wheel disc brakes 1996 Z71 w/ 35's |
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#7 |
Registered User
Join Date: Nov 2002
Location: raleigh, NC
Posts: 60
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Re: replacing the rag joint with a U-joint (sline counts)
Thanks for all of the replies and info.
I will probably measure and count before I drop the dough on the joint. I agree that just the joint seems like the best way to go. Any more experiences and actual measurements would be interesting since there is such difference between what people have found. thanks, adam
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1971 GMC Jimmy 350/350/205/D60/14bolt on 38's 1984 M1008 CUCV 6.2/TH400/208/D60/14bolt on 36's 1991 W250 5.9/G360/205/D60/D70 on 33's (tow-rig) Lotsa Full Size Jeeps (J10/J20)! Adam |
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#8 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: replacing the rag joint with a U-joint (sline counts)
3/4 and 13/16 are near identical in size. Im sure a 13/16 would work as it is a hair larger and tight bolts would hold it on. The shaft is positivly 3/4 the whole length of the shaft, end to end. Just get your spline sides correct and order away. I would spring for a vibration dampner.
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#9 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: replacing the rag joint with a U-joint (sline counts)
BTW 3/4 = 12/16 if you see what I mean.
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#10 |
Registered User
Join Date: Oct 2005
Location: San Diego, Ca
Posts: 251
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Re: replacing the rag joint with a U-joint (sline counts)
I'm sure hoping everyone got what you mean. Ya never know though. Some people don't know that 1/8th is also .125.
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Rob "RunTMCfan" |
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#11 | |
Registered User
Join Date: Nov 2002
Location: raleigh, NC
Posts: 60
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Re: replacing the rag joint with a U-joint (sline counts)
Quote:
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1971 GMC Jimmy 350/350/205/D60/14bolt on 38's 1984 M1008 CUCV 6.2/TH400/208/D60/14bolt on 36's 1991 W250 5.9/G360/205/D60/D70 on 33's (tow-rig) Lotsa Full Size Jeeps (J10/J20)! Adam |
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#12 | |
Registered User
Join Date: Dec 2003
Location: West Michigan
Posts: 447
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Re: replacing the rag joint with a U-joint (sline counts)
Quote:
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1972 Chevy Blazer 1997 GMC Sierra 2009 Chevy Tahoe |
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#13 |
Registered User
Join Date: Oct 2003
Location: Central Vermont
Posts: 8,538
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Re: replacing the rag joint with a U-joint (sline counts)
I used a Borgeson when I switched over to a ram assist set up, had to change the lower joint in order to fit the new box that came with the PSC kit.
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#14 |
Senior Member
Join Date: Jan 2005
Location: Raleigh, NC
Posts: 894
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Re: replacing the rag joint with a U-joint (sline counts)
With all this talk of u-joints I guess I need to go inspect mine and see if it is shot yet. 37 years? How many people are killing these things?
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-Chris Building a stripper, one part at a time: 1969 K5, 307, 3spd, 3 seats, hard top. Added Pwr Discs, Pwr Steering, Aux Battery, T-case Skid, Lighted Sidemarkers, HEI, Lock-Right Diff, ECE Class IV Hitch, 32" MT/Rs. Parts to Install: Hand Throttle, Console, Tow Hooks, Dual Horns, AM-FM, Dealer Swing-Away Tire Carrier, Gas Tank Skid. Also building a 1950 Willys CJ-3A and off-roading a 2001 Nissan Frontier on 1-Ton Portals... |
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#15 | |
Registered User
Join Date: Nov 2002
Location: raleigh, NC
Posts: 60
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Re: replacing the rag joint with a U-joint (sline counts)
Quote:
I am in raleigh as well. Big ass ugly orange 71 jimmy on 35's, camo CUCV on 36's, various full-size jeeps (waggy, J10, J20), 91 cummins W250, and last but not least black ford festiva (pimp mobile). I never know what I will drive on any given day. ![]() I have a body lift on the Jimmy that stresses the rag-joint. They last a pretty long time if your stock, but it only costs like 3 dollars and five minutes to replace the rag joint.
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1971 GMC Jimmy 350/350/205/D60/14bolt on 38's 1984 M1008 CUCV 6.2/TH400/208/D60/14bolt on 36's 1991 W250 5.9/G360/205/D60/D70 on 33's (tow-rig) Lotsa Full Size Jeeps (J10/J20)! Adam |
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#16 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: replacing the rag joint with a U-joint (sline counts)
Body lift = mandatory
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#17 | |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: replacing the rag joint with a U-joint (sline counts)
Quote:
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#18 |
Registered User
Join Date: Nov 2002
Location: raleigh, NC
Posts: 60
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Re: replacing the rag joint with a U-joint (sline counts)
I pulled the shaft today and both the steering column and steering box were 3/4" with 36 splines.
I think that I am going to just go ahead and buy a whole new shaft since the bell joint on the column side is kinda beat and I would need to buy a new intermediate shaft to replace the one with the rag joint coupler. Thanks for all of the replies.
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1971 GMC Jimmy 350/350/205/D60/14bolt on 38's 1984 M1008 CUCV 6.2/TH400/208/D60/14bolt on 36's 1991 W250 5.9/G360/205/D60/D70 on 33's (tow-rig) Lotsa Full Size Jeeps (J10/J20)! Adam |
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#19 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: replacing the rag joint with a U-joint (sline counts)
I installed my new steering box u-joint yesterday and mine is definitely 3/4 by 30 spline. It is pretty difficult to count the splines on the steering box. If you count the rag joint splines I think there are half the splines present so that will tell you if it is 30 or 36. You might want to double check before you order your parts. Again, my power steering box is from about a 78 4x4 but when I called Borgeson they said the Chevy power steering boxes of our era and the 1973 to at least 1978 should all be 3/4 by 30 spline.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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#20 |
Junior Member
![]() Join Date: Oct 2005
Location: Bakersfield, CA
Posts: 305
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Re: replacing the rag joint with a U-joint (sline counts)
ajbirken - please post pictures of both ends when you do this.
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#21 |
The Blazer King
Join Date: Sep 2000
Location: Valrico, Fl (Tampa)
Posts: 1,213
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Re: replacing the rag joint with a U-joint (sline counts)
just pull the shaft.....flip it around and see if it will slide on backwards. If it fits the are the same. If not well there ya go.
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72 2wd Blazer. Its the superbichinest, megacoolinest, superflowinest. |
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#22 | |
Registered User
Join Date: Nov 2002
Location: raleigh, NC
Posts: 60
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Re: replacing the rag joint with a U-joint (sline counts)
Quote:
Good idea. It appears that the steering box side is a hair bigger (likely 13/16 rather than the previously stated 3/4). They both appear to be 36 spline though. I'll take some pics later. Yukon Jack, based on the site in the link above your 78 steering box should be 30 spline not 36 so maybe it makes sense. I guess that it is possible/likely that these 35+ year old trucks have had the steering boxes replaced before which means that all bets are off on "stock".
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1971 GMC Jimmy 350/350/205/D60/14bolt on 38's 1984 M1008 CUCV 6.2/TH400/208/D60/14bolt on 36's 1991 W250 5.9/G360/205/D60/D70 on 33's (tow-rig) Lotsa Full Size Jeeps (J10/J20)! Adam |
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#23 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: replacing the rag joint with a U-joint (sline counts)
Here is a pic of the u-joint at the steering box
![]() and a pic of it at the steering column - the steering column is not secured yet so ignore the block of wood that has the column wedged in place ![]() The telescopic shaft ended up being about 11 1/2" long but I'm using a van tilt column.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 |
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