Rear End FAQ (Help with Pics please) - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72armyswbtruck · 04-01-2007, 08:54 PM

OK so I have decided to start a Rear End FAQ Identification
Lots of Pics and info: If you have clear actual pics of the rear ends and front ends please post them. Thanks

72armyswbtruck · 04-01-2007, 08:55 PM

DANA 30
The Model 30, with a 7 1/8-inch-diameter ring gear, was the standard front differential in some 1972-75 CJ-5s and all 1975-and-later CJ-5s and CJ-7s. It is still used in the front of Cherokees and Comanches, and will probably appear in the front of the Grand Cherokee.

1969k10stepside · 04-01-2007, 08:56 PM

Dont have a close up on the front...but here is a pic of a Corp. 12 bolt on the back of my shortbed 4x4
Name: Pic1053.jpg
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72armyswbtruck · 04-01-2007, 08:56 PM

DANA 41
The 41, which has a ring gear size similar to the Dana 44, came in early CJ-2As. The spiders are the same as a 44's, but the carrier and gears aren't. It is almost universally swapped out in favor of a Dana 44.

72armyswbtruck · 04-01-2007, 08:57 PM

DANA 44
All domestic manufacturers have used Dana axles, and the 44, with its 8 1/2-inch ring gear, is likely to be a step up on anything smaller than a 1/2-ton. A narrowed 44 could be the hot ticket for vehicles smaller than a full-size sport-utility. It was standard under the front of pre-1976 Chevy Blazers and 1/2-tons, solid front-axled F-150s and Broncos, and Jeep J-10/J-20s and Grand Wagoneers.

72armyswbtruck · 04-01-2007, 08:58 PM

DANA 44-IF
The Ford-version Dana 44 Twin-Traction-Beam setup is similar to other 44s (ring gear diameters are identical), but there are no axle tubes and the "cover" is actually the suspension arm. It's standard in the front of any TTB-equipped Ford except the F-250HD, which uses a Dana 50.

72armyswbtruck · 04-01-2007, 08:59 PM

DANA 60
A Dana 60 looks deceptively similar to a Dana 44, but the 60's 9 3/4-inch ring gear diameter is a major factor in strength. It can be found in many 3/4-ton pickup and van rear ends.

72armyswbtruck · 04-01-2007, 08:59 PM

DANA 70
Almost identical in appearance to a Dana 60, the Dana 70 is standard in heavy Dodge pickups and GM duallies. The large 10.54-inch ring gear diameter will tolerate much torque, and is suitable for diesel power and/or big tires.

72armyswbtruck · 04-01-2007, 09:00 PM

GM CORPORATE 10-BOLT
The GM 10-bolt is named for the number of bolts on the cover; ring gear diameter is 7 1/2 inches. Variations of this can be found in the rear of GM S-trucks and some Isuzus, and in the front of S-trucks.

72armyswbtruck · 04-01-2007, 09:02 PM

GM CORPORATE 10-BOLT
This 10-bolt, with a larger 8 1/2-inch ring gear diameter, replaced the Dana 44 that was used in the front of some pre-1977 GMs. It can also be found in the back of 1983-91 1/2-tons and in the front of 1983-87 1/2-tons.

72armyswbtruck · 04-01-2007, 09:03 PM

GM CORPORATE 12-BOLT
The stronger 12-bolt, with an 8 7/8-inch-diameter ring gear, can be found in various 1964-82 GM 1/2- and 3/4-ton rearends.

72armyswbtruck · 04-01-2007, 09:04 PM

GM CORPORATE 14-BOLT
The "small" GM 14-bolt has a 9 1/2-inch ring gear diameter. It was used in the rear of 1964-and-later GM pickups, and in the rear of 1984-91 3/4-ton Suburbans.

72armyswbtruck · 04-01-2007, 09:05 PM

GM CORPORATE 14-BOLT
With a 10 1/2-inch-diameter ring gear, the biggest 14-bolt GM rearend looks much like a Dana 70, and is but a few thousandths of an inch shorter in ring gear diameter. This axle is commonly used with big engines and/or overly large tires. It was used under 1973-87 3/4-tons.

msgross · 04-28-2007, 05:34 PM

nice write-up, this should be in FAQ

KFreddy · 04-28-2007, 06:04 PM

12 bolt car on left and 12 bolt truck on right...

04-01-2007, 08:54 PM	#1
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Rear End FAQ (Help with Pics please) OK so I have decided to start a Rear End FAQ Identification Lots of Pics and info: If you have clear actual pics of the rear ends and front ends please post them. Thanks __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 08:55 PM	#2
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Dana 30 DANA 30 The Model 30, with a 7 1/8-inch-diameter ring gear, was the standard front differential in some 1972-75 CJ-5s and all 1975-and-later CJ-5s and CJ-7s. It is still used in the front of Cherokees and Comanches, and will probably appear in the front of the Grand Cherokee. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!" Last edited by 72armyswbtruck; 10-04-2007 at 07:44 PM.

04-01-2007, 08:56 PM	#3
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,020	Re: Rear End FAQ (Help with Pics please) Dont have a close up on the front...but here is a pic of a Corp. 12 bolt on the back of my shortbed 4x4

04-01-2007, 08:56 PM	#4
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Dana 41 DANA 41 The 41, which has a ring gear size similar to the Dana 44, came in early CJ-2As. The spiders are the same as a 44's, but the carrier and gears aren't. It is almost universally swapped out in favor of a Dana 44. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!" Last edited by 72armyswbtruck; 10-04-2007 at 07:44 PM.

04-01-2007, 08:57 PM	#5
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Dana 44 DANA 44 All domestic manufacturers have used Dana axles, and the 44, with its 8 1/2-inch ring gear, is likely to be a step up on anything smaller than a 1/2-ton. A narrowed 44 could be the hot ticket for vehicles smaller than a full-size sport-utility. It was standard under the front of pre-1976 Chevy Blazers and 1/2-tons, solid front-axled F-150s and Broncos, and Jeep J-10/J-20s and Grand Wagoneers. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!" Last edited by 72armyswbtruck; 10-04-2007 at 07:44 PM.

04-01-2007, 08:58 PM	#6
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Dana 44-if DANA 44-IF The Ford-version Dana 44 Twin-Traction-Beam setup is similar to other 44s (ring gear diameters are identical), but there are no axle tubes and the "cover" is actually the suspension arm. It's standard in the front of any TTB-equipped Ford except the F-250HD, which uses a Dana 50. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 08:59 PM	#7
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Dana 60 DANA 60 A Dana 60 looks deceptively similar to a Dana 44, but the 60's 9 3/4-inch ring gear diameter is a major factor in strength. It can be found in many 3/4-ton pickup and van rear ends. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 08:59 PM	#8
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Dana 70 DANA 70 Almost identical in appearance to a Dana 60, the Dana 70 is standard in heavy Dodge pickups and GM duallies. The large 10.54-inch ring gear diameter will tolerate much torque, and is suitable for diesel power and/or big tires. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 09:00 PM	#9
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Gm Corporate 10 Bolt GM CORPORATE 10-BOLT The GM 10-bolt is named for the number of bolts on the cover; ring gear diameter is 7 1/2 inches. Variations of this can be found in the rear of GM S-trucks and some Isuzus, and in the front of S-trucks. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 09:02 PM	#10
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Gm Corporate 10 Bolt (8 1/2in) GM CORPORATE 10-BOLT This 10-bolt, with a larger 8 1/2-inch ring gear diameter, replaced the Dana 44 that was used in the front of some pre-1977 GMs. It can also be found in the back of 1983-91 1/2-tons and in the front of 1983-87 1/2-tons. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 09:03 PM	#11
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Gm Corporate 12 Bolt GM CORPORATE 12-BOLT The stronger 12-bolt, with an 8 7/8-inch-diameter ring gear, can be found in various 1964-82 GM 1/2- and 3/4-ton rearends. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 09:04 PM	#12
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Gm Corporate 14 Bolt (9 1/2in) GM CORPORATE 14-BOLT The "small" GM 14-bolt has a 9 1/2-inch ring gear diameter. It was used in the rear of 1964-and-later GM pickups, and in the rear of 1984-91 3/4-ton Suburbans. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-01-2007, 09:05 PM	#13
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,034	Gm Corporate 14 Bolt (10 1/2 In) GM CORPORATE 14-BOLT With a 10 1/2-inch-diameter ring gear, the biggest 14-bolt GM rearend looks much like a Dana 70, and is but a few thousandths of an inch shorter in ring gear diameter. This axle is commonly used with big engines and/or overly large tires. It was used under 1973-87 3/4-tons. Attached Images __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

04-28-2007, 05:34 PM	#14
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Rear End FAQ (Help with Pics please) nice write-up, this should be in FAQ __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

04-28-2007, 06:04 PM	#15
KFreddy Active Member Join Date: Apr 2005 Location: Miami, Florida Posts: 286	Re: Rear End FAQ (Help with Pics please) 12 bolt car on left and 12 bolt truck on right... Attached Images __________________ "The Great State of Florida" Last edited by KFreddy; 04-28-2007 at 06:04 PM.



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