1962 gmc rearend swap? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Bregion · 07-11-2013, 09:52 AM

Whats the easiest rearend to swap out for my old one off my 62 GMC? I dont care much about gear ratio. Just want 5 lugs instead of the 6. I dont have the option of redrilling. So looking for a newer year chevy to just swap out. What year should i go with?
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**Clyde65** · 07-11-2013, 10:48 AM

73-87 12bolt I believe is your only option since 60-62 rears are wider than 63-72. you will need to weld on the trailing arm mount though...unless you have leaves now

Smo_King · 07-11-2013, 01:45 PM

Quote:

Originally Posted by Clyde65

73-87 12bolt I believe is your only option since 60-62 rears are wider than 63-72. you will need to weld on the trailing arm mount though...unless you have leaves now

Is it a pretty straight swap if you have leaves? I have the 3spdOD tranny... Bed is off atm just curious if I can get in the 13>MPG range somehow.

Bregion · 07-11-2013, 02:08 PM

It still has the coil spings in back. Leave springs came in 63 i think.(not sure). So do you think it would be better to weld a bracket on the rearend and us u bolts to the trailing arm?
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Brad54 · 07-11-2013, 07:18 PM

That's a Dana 44 rear, right? (being a GMC).
If you end up taking it out, I sure would be interested in one of the axle shafts!

-Brad

Bregion · 07-11-2013, 11:10 PM

Not sure what they are but willing to get with you and sell one to you if its what ya need. You want my number?
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**Captainfab** · 07-12-2013, 02:20 AM

The '60 to early '70 1/2 ton pickup differentials are all 62" wide. The late '70-'87 1/2 ton differentials are 63.5" wide. So that will be .750" wider on each side. The '71-'87 differentials are the 5 x 5 wheel stud pattern. To install one under your '62, you will need to cut off the leaf spring perches, and the shock mounts. Then you will have to weld on the trailing arm mounts, and transfer the panhard bar mount from your Eaton HO32 currently under your truck. In doing this, you will want to be sure to get your pinion angle where it needs to be. Use your current differential for a reference.

Bregion · 07-12-2013, 02:18 PM

Any recomindation on the year i should go with? Im hitn up the junk yard. Are all they chevys gonna have the same yearend in those years?
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McCoyAZ · 07-12-2013, 02:29 PM

Quote:

Originally Posted by Bregion

Any recomindation on the year i should go with? Im hitn up the junk yard. Are all they chevys gonna have the same yearend in those years?
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Do what I am doing.

Yank those axels out, have a machine shop remove the wheel studs and re drill it to a 5 lug. Buy a pair of 71 rear drums 11" x 2" and new studs and replace the axel bearings and be happy.

**slepysal** · 07-12-2013, 02:59 PM

I hope to swap the 67 rearend that has 5 lug axles in it soon. I have the new axle pads, adjustable trac arm, ujoint, lowering springs and new spring hardware. As well as new wheel cylinders and brake hose. All that is missing is a welder

**Captainfab** · 07-13-2013, 12:31 AM

The '63-'82 C10's had the 12 bolt. The '80-'87's had the 8.5" 10 bolt. There were a couple years of overlap there. Either one should work just fine in your truck. If you have a choice, I would get one that has the 11" x 2.750" brakes instead of the 11" x 2" brakes.

Quote:

Originally Posted by Bregion

Any recomindation on the year i should go with? Im hitn up the junk yard. Are all they chevys gonna have the same yearend in those years?
Posted via Mobile Device

07-11-2013, 09:52 AM	#1
Bregion Registered User Join Date: Jun 2013 Location: Elk city ,ok Posts: 65	1962 gmc rearend swap? Whats the easiest rearend to swap out for my old one off my 62 GMC? I dont care much about gear ratio. Just want 5 lugs instead of the 6. I dont have the option of redrilling. So looking for a newer year chevy to just swap out. What year should i go with? Posted via Mobile Device

07-11-2013, 10:48 AM	#2
Clyde65 1965 Chevy C10, 2005 4.8L/4l60 Join Date: Aug 2004 Location: DFW Texas Posts: 8,540	Re: 1962 gmc rearend swap? 73-87 12bolt I believe is your only option since 60-62 rears are wider than 63-72. you will need to weld on the trailing arm mount though...unless you have leaves now __________________ Clyde65 Rebuild of Clyde http://67-72chevytrucks.com/vboard/s...84#post8338184 69 Aristocrat Lo Liner build http://67-72chevytrucks.com/vboard/s...84#post7561684 *support our troops!*

07-11-2013, 02:08 PM	#4
Bregion Registered User Join Date: Jun 2013 Location: Elk city ,ok Posts: 65	Re: 1962 gmc rearend swap? It still has the coil spings in back. Leave springs came in 63 i think.(not sure). So do you think it would be better to weld a bracket on the rearend and us u bolts to the trailing arm? Posted via Mobile Device

07-11-2013, 07:18 PM	#5
Brad54 Registered User Join Date: Aug 2006 Location: Athens, Georgia Posts: 1,456	Re: 1962 gmc rearend swap? That's a Dana 44 rear, right? (being a GMC). If you end up taking it out, I sure would be interested in one of the axle shafts! -Brad __________________ '61 Suburban daily driver: off the road due to 180-pound 8-pt buck! '62 K-10 long-step project '61 C30 Camper, aka "Valdez" There's no cool like Old School

07-11-2013, 11:10 PM	#6
Bregion Registered User Join Date: Jun 2013 Location: Elk city ,ok Posts: 65	Re: 1962 gmc rearend swap? Not sure what they are but willing to get with you and sell one to you if its what ya need. You want my number? Posted via Mobile Device

07-12-2013, 02:20 AM	#7
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,246	Re: 1962 gmc rearend swap? The '60 to early '70 1/2 ton pickup differentials are all 62" wide. The late '70-'87 1/2 ton differentials are 63.5" wide. So that will be .750" wider on each side. The '71-'87 differentials are the 5 x 5 wheel stud pattern. To install one under your '62, you will need to cut off the leaf spring perches, and the shock mounts. Then you will have to weld on the trailing arm mounts, and transfer the panhard bar mount from your Eaton HO32 currently under your truck. In doing this, you will want to be sure to get your pinion angle where it needs to be. Use your current differential for a reference. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

07-12-2013, 02:18 PM	#8
Bregion Registered User Join Date: Jun 2013 Location: Elk city ,ok Posts: 65	Re: 1962 gmc rearend swap? Any recomindation on the year i should go with? Im hitn up the junk yard. Are all they chevys gonna have the same yearend in those years? Posted via Mobile Device

07-12-2013, 02:59 PM	#10
slepysal Registered User Join Date: Oct 2006 Location: San Jose NOR*CAL Posts: 3,080	Re: 1962 gmc rearend swap? I hope to swap the 67 rearend that has 5 lug axles in it soon. I have the new axle pads, adjustable trac arm, ujoint, lowering springs and new spring hardware. As well as new wheel cylinders and brake hose. All that is missing is a welder __________________ 1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... "



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