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12-15-2004, 01:28 PM
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#1 |
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Registered User
Join Date: Apr 2000
Location: Chester County PA, USA
Posts: 1,228
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72 front axle u joint
I have a 72 front axle with the original small u joint axle shafts. I think they are 1 1/16 .. I want to put the bigger style axle shaft , i think the u joint is 1 1/8, into my 72 housing. I did it before, but the shaft that i bought was already out and they didn't know what year it was from. Does anybody know what years fit? Does it have to be from a dana 44 ? Mine is a dana 44 1/2 ton.
Thanks, Randy
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72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania |
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12-15-2004, 02:25 PM
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#2 |
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Registered User
Join Date: Feb 2000
Location: Modesto, CA
Posts: 1,842
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For the most part any D44 73+ axel shafts will work. D44s are 30 spline and I belive GM 10bolt fronts are 28spline.
I have heard of some first gens needing differnt spindals to make it work. On my 72 K5 it was a simple as pulling the old axels out and slidding in the bigger 297x ujointed shafts. I now run Warn CrmMolly shafts in mine. Good luck Burt
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1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks 
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12-16-2004, 12:47 AM
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#3 |
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Senior Member
Join Date: Jan 2003
Location: Grand Junction, Colorado
Posts: 611
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73 up dana 44 shafts will work but you need the 73 up spindles and hubs to go with the conversion....
I used parts from a 78 K5 parts truck i had and did the upgrade on my father in laws 71 K5 last spring... Not only do you get the bigger u-joints...you get a pair of hubs that seal out water... DW
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Doug Wright aka K5NUTT over @coloradok5.com Owner of http://groups.yahoo.com/group/ChevyK5BlazerChalets Certified K5 Nut |
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12-16-2004, 08:25 AM
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#4 |
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Registered User
Join Date: Apr 2000
Location: Chester County PA, USA
Posts: 1,228
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Thats strange, I put in the bigger axle and used the 72 hub and spindle and it went together. Did i do something wrong?
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72 k/10 short wideside 72 k/5 Blazer 72 K/5 Blazer - obstacle course racer 72 custom/10 8' bed 70 K/5 Blazer 67 C-30 GMC Flat bed 86 GMC K2500 Plow Truck 85 GMC K3500 84 M1008 85 M1008 77 G30 Motor Home 72 Sears 12hp Tractor Glenmoore, Pennsylvania |
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12-16-2004, 05:10 PM
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#5 |
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Registered User
Join Date: Feb 2000
Location: Modesto, CA
Posts: 1,842
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No, if your rig had the smaller spindals your spindal would not have slid over the axel shaft(spindal bearring size). My 72 didn't need a spindal swap either but my buddy Ryan with a 72 did. My k5 is a late production 72 so maby GM started using 'same size' spindals in late 72 and up??? I Duno
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1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks
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12-19-2004, 01:41 PM
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#6 |
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user # 2756
 
Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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good article: http://77cj.littlekeylime.com/flatop_knucles.html
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1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm 
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