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10-01-2014, 12:40 PM
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#1 |
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Registered User
 Join Date: Sep 2011
Location: Grapevine Texas
Posts: 32
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62 1/2ton automatic trans what rearend ratios??
62 1/2 ton automatic trans what rearend ratios came stock? and they are front chunks are they the same as 55-57 chevy passanger cars?
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10-02-2014, 12:32 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: 62 1/2ton automatic trans what rearend ratios??
You might be lucky and have 3.38 gears, but most of the '55-'62 trucks had 3.90 gears. No the Eaton HO32 is not the same as the '55-'64 car differential. The Eaton HO32 was used from '55 second series thru '62 in the 1/2 ton trucks.
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10-02-2014, 02:17 AM
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#3 |
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Registered User
Join Date: May 2012
Location: Las Vegas NV
Posts: 122
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Re: 62 1/2ton automatic trans what rearend ratios??
62 Impalas had 3:08 with automatic and 3:36 with 3 on the tree.
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Jon S 1966 GMC Suburban 305 V6 Las Vegas NV |
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10-02-2014, 10:59 AM
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#4 | |
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Registered User
Join Date: Feb 2014
Location: Pocahontas Arkansas
Posts: 684
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Re: 62 1/2ton automatic trans what rearend ratios??
Quote:
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10-02-2014, 06:11 PM
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#5 | |
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Registered User
Join Date: May 2012
Location: Las Vegas NV
Posts: 122
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Re: 62 1/2ton automatic trans what rearend ratios??
Quote:
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Jon S 1966 GMC Suburban 305 V6 Las Vegas NV |
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10-03-2014, 11:46 PM
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#6 | |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: 62 1/2ton automatic trans what rearend ratios??
Quote:
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10-02-2014, 11:45 AM
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#7 |
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Registered User
Join Date: Sep 2012
Location: Dallas, GA
Posts: 1,497
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Re: 62 1/2ton automatic trans what rearend ratios??
https://gmheritagecenter.com/docs/gm...olet-Truck.pdf
3.90 or 4.11. 3.38 was only available with a manual trans. |
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10-02-2014, 01:21 PM
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#8 |
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Registered User
Join Date: Feb 2012
Location: pleasant valley--placerville ca
Posts: 3,039
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Re: 62 1/2ton automatic trans what rearend ratios??
anybody ever seen a 3.38 from the factory?
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1961 chevy K10 my build is------------61K10 build |
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10-03-2014, 08:37 PM
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#9 |
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Registered User
Join Date: Sep 2011
Location: Grapevine Texas
Posts: 32
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Re: 62 1/2ton automatic trans what rearend ratios??
Thank you. I was told I can check the ratio by somehow marking the tire and the trans mission yoke and turn tire. not sur of the process if you have any info that would help please send.
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10-03-2014, 11:12 PM
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#10 |
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60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
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Re: 62 1/2ton automatic trans what rearend ratios??
Why not just pull the cover and have a look. I almost guarantee that the oil needs changed. It'll just cost you a cover gasket, a couple quarts of gear oil and a little time. Then you'll know exactly what gears you have and the peace of mind knowing that your differential has fresh oil and what the condition is inside.
__________________
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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10-07-2014, 01:14 PM
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#11 | |
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Registered User
Join Date: Sep 2011
Location: Grapevine Texas
Posts: 32
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Re: 62 1/2ton automatic trans what rearend ratios??
Quote:
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10-07-2014, 10:46 PM
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#12 | |
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60-66 Nut
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
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Re: 62 1/2ton automatic trans what rearend ratios??
The '55-'62 Eaton HO32 differentials have both a removable 3rd member and a rear cover.
If it doesn't have a removable rear cover it is not an original differential to your truck. 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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