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11-09-2009, 11:17 PM
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#1 |
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Registered User
Join Date: Jul 2007
Location: san antonio
Posts: 648
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12 bolt rear end
i know "SEARCH BUTTON" but keep getting conflicting answers.
Will a 12 bolt rear end out of a 72 c10 fit correctly into my 66gmc with leaf springs? i know its slightly wider but how is that so bad and would I be able to run my rallys off my 85 c10 with a smaller tire for now? |
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11-10-2009, 01:48 AM
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#2 | |
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60-66 Nut
  Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
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Re: 12 bolt rear end
Is that '72 12 bolt setup for leafs or coils? If it is for leafs, that will bolt right up. However you may need to shorten your driveshaft if your original rear end was a Dana 44. You may also have to address differences in the e-brake cables.....not positive on that. Width wise it's only 1.5" overall, so just .750" each side. You should be alright with a small to medium size tire. It also depends on whether your Rally's are 7" wide or 8".
Quote:
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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 |
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11-10-2009, 04:24 PM
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#3 |
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Registered User
Join Date: Aug 2009
Location: Coaldale Alberta
Posts: 174
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Re: 12 bolt rear end
So what your saying is that im going to have issues with my 10" wide rallys...
Jory 
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11-10-2009, 04:33 PM
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#4 |
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Registered User
Join Date: Sep 2009
Location: California Delta
Posts: 2,163
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Re: 12 bolt rear end
Depends on backspacing.
__________________
Name: Rich Current Ride: 1964 C-10 Short Fleetside Daily Driver: 2005 GMC crew cab short fleetside /2001 Chevy Tahoe Past GM Trucks: 1959 GMC short stepside 1968 GMC short stepside-4x4 1973 Chevy short stepside 1989 Chevy short fleetside-reg cab 1993 Chevy short fleetside-Xcab 2002 Chevy short fleetside-Xcab Save the dinosaurs, use synthetic oil. |
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11-10-2009, 04:39 PM
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#5 |
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Registered User
Join Date: Aug 2009
Location: Coaldale Alberta
Posts: 174
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Re: 12 bolt rear end
Im planning on swapping the 79 12 bolt into the 63 so that i have 5 lug axles and the other one has been sitting for over 15 years and i dont know it was any good when they parked it.
With the the 10" wide rallys on the 79 rearend it only measured 2" wider than the 63 rearend with skinnies on it. probably is fine then eh? Jory |
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11-10-2009, 10:52 PM
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#6 |
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Registered User
Join Date: Jul 2007
Location: san antonio
Posts: 648
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Re: 12 bolt rear end
well im going to pick it up tomorrow for 30 bucks hope it fits,
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