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11-01-2017, 01:04 PM
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#1 |
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Registered User
Join Date: Nov 2017
Location: sidney, ne.
Posts: 4
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69 gmc half ton
have a 69 half ton gmc 350, auto. 400, clutch pak in powr-lok went out, found clutch pak kit, but after looking at axles dicided they needed replaced also. p.u. has a 10 bolt dana 44-1, 6-lug, but has an off-set pumpkin, 2". have been told by several people while trying to order axles, that trucks don't have off-set housings. what housing belongs in a 69 gmc half ton p.u.????
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11-01-2017, 03:20 PM
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#2 | |
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One of the First
 
Join Date: Jan 2000
Location: St. Augustine,FL.
Posts: 4,059
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Re: 69 gmc half ton
Quote:
http://67-72chevytrucks.com/vboard/s...d.php?t=670179 All early Chevy/GMC K10/20, Dana 44 pumpkin were offset too passenger side to line up with NP 205 or Np 203 Transfer Case.
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DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie) |
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11-01-2017, 05:08 PM
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#3 |
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Senior Member
Join Date: Mar 2003
Location: Colfax-California
Posts: 8,628
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Re: 69 gmc half ton
The pinion is always going to be a little offset some to keep the axle shafts the same length. "Cept maybe the 14 bolt full float, just from its massive size and pinion support
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11-02-2017, 02:52 PM
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#4 |
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One of the First
Join Date: Jan 2000
Location: St. Augustine,FL.
Posts: 4,059
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Re: 69 gmc half ton
If your refering to the rear Differential, look at this website:
https://www.tomsdifferentials.com Chevy 12 bolt for a truck is what should be OE, but different years had different shaft lenghts.
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DAVID PASSMORE ST AUGUSTINE ,FL ZIP 32084 '71 SWB K/10 CUSTOM DELUXE (Chili) '72 BLAZER K/5 Muscle Truck (Mule) '72 LWB K/20 CHEYENNE (Blackie) |
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11-06-2017, 04:38 PM
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#5 |
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Registered User
Join Date: Nov 2017
Location: sidney, ne.
Posts: 4
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Re: 69 gmc half ton
so to get this right, a 69 gmc c-10, is suppose to have a 12 bolt rear differential, instead of the 10 bolt that is in it now?? the off-set could be out of a k10 or a g series van, thanks! know where else to look now, to maybe get the right axles now.
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11-06-2017, 11:59 PM
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#6 |
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Senior Member
Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
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Re: 69 gmc half ton
The early GMCs used a Dana 44 rear end. Which also had an offset pumpkin. Rear end is most likely original
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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi |
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11-07-2017, 07:32 PM
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#7 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: 69 gmc half ton
Yeah, the Dana44 could be correct original in your GMC. Use Dana44 to identify it and drop the 10-bolt part. While many rears have 10 bolts holding cover on, there is only one known as the 10-bolt and that is the corporate GM rear, which came along later.
Got pictures?
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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11-13-2017, 04:31 PM
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#8 |
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Registered User
Join Date: Nov 2017
Location: sidney, ne.
Posts: 4
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Re: 69 gmc half ton
yea I got pictures of differential and all 3 numbers on pumpkin there are no numbers on the tubes, have wire brushed them down. numbers on pumpkin are 44-1, c or g-30284, 1968618, and 2018188. if you can tell me if this belongs in my 69 g.m.c. 1/2 ton c-10 I would really appreciate it. I have been told by several people it doesn't belong in it. it is a 6-lug with a 2" off-set.
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11-15-2017, 12:57 PM
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#9 |
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Registered User
Join Date: Nov 2017
Location: sidney, ne.
Posts: 4
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Re: 69 gmc half ton
left rep[y 11-13-17 have pic.'s, no numbers on tubes. pumpkin has 3 different numbers on it, 44-1, g or c 30294, us pat 2018188, and us pat1988618.
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