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01-02-2012, 09:06 PM
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#1 |
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Registered User
Join Date: Oct 2011
Location: calgary Alberta
Posts: 9
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which diff do i got?
I'm new to the solid front axle deal and i have a 1970 GMC 4X4 and id like to do front disc swap on it but i cant seem to find a conversion for them. i was wondering how i tell which axle i have under my truck its a 6 lug hub.
thanks dan |
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01-02-2012, 09:19 PM
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#2 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
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Re: which diff do i got?
Should be an open knuckle drum brake Dana 44 if all is as it left factory.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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01-02-2012, 09:25 PM
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#3 |
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Registered User
Join Date: Oct 2011
Location: calgary Alberta
Posts: 9
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Re: which diff do i got?
ok sweet any place online where i can get a disc conversion kit for it?
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01-02-2012, 11:28 PM
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#4 |
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Grease Monkey
Join Date: Oct 2007
Location: Fresno CA
Posts: 750
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Re: which diff do i got?
do a google search. I found a few different options.
__________________
Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12 |
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01-02-2012, 11:41 PM
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#5 |
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Registered User
Join Date: Oct 2011
Location: calgary Alberta
Posts: 9
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Re: which diff do i got?
yeah i have been doing that but its hard to see if they would work or not i don't want to order something and find out it doesnt work. where did you find yours?
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01-02-2012, 11:41 PM
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#6 |
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gets board easy.......
Join Date: Mar 2009
Location: Colorado Springs
Posts: 717
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Re: which diff do i got?
Your best option would be to.swap in a complete front diff.
76 and older Dana 44 with disc brakes will bolt right in 77 and later D44 will bolt right in but you will need new (wider) u bolts and upper spring plates out of the same year. And any 10 bolt font end will bolt right in but you will also need new u bolts and plates. IMO that would be your best option. And I've seen those complete front axles go for as low as $100 hub to hub. Posted via Mobile Device |
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01-03-2012, 12:30 AM
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#7 |
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Senior Member
 
Join Date: Aug 2008
Location: Long Beach, CA
Posts: 1,813
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Re: which diff do i got?
I would think any 71 or older Dana 44 with disk brakes will bolt right in...
__________________
Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble! |
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01-03-2012, 12:42 AM
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#8 | |
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gets board easy.......
Join Date: Mar 2009
Location: Colorado Springs
Posts: 717
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Re: which diff do i got?
Quote:
Posted via Mobile Device |
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01-03-2012, 01:01 AM
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#9 |
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Senior Member
Join Date: Aug 2008
Location: Long Beach, CA
Posts: 1,813
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Re: which diff do i got?
All trucks had disk starting in 71. My 72 K5 had a Dana 44 with disks up front. However at some point in the 70s the u-joints got bigger and maybe also the axle shaft diameter and spline count. Someone else will have to confirm the details on that.
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Jason M. @argonaut62 1972 K5 Blazer CST, Turquoise 1966 K20 Short Fleet Pickup, Big Ugly 1964 C10 Short Fleet, Gertrude 2001 Porsche 911 Carrera 1996 Ford Bronco XLT 1980 Jeep Wagoneer 2008 Honda CBR1000RR 2005 Honda RC51 1981 Honda CB750C No dis-assemble Johnny Five! No dis-assemble! |
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01-03-2012, 09:16 PM
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#10 |
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,727
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Re: which diff do i got?
I sold a '72 front axle to a guy with a '69 4x4. He just put the spindles, backing plates, etc. on his existing axle. No need to mess with finding matching gear ratio or anything else.
__________________
44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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01-03-2012, 11:30 PM
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#11 |
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Registered User
Join Date: Jun 2006
Location: Utah
Posts: 1,562
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Re: which diff do i got?
I'm swapping in a 10 bolt out of a mid 80s 3/4 ton because I got it for a pretty good deal at $160, and it has the all the parts and as an added bonus, the ratio matches the rear.
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