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#1 |
Senior Member
![]() Join Date: Aug 2018
Location: Western Colorado
Posts: 1,165
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Help Identifying Differential
I'm curious to know more about my rear axle. My 68 GMC C15 has a Dana/Spicer 44, but I don't know anything about the differential. The truck was a factory 307/4-speed. It does have a factory metal tag attached to one of the cover bolts that indicates to use limited slip fluid. The stamping reads: 3 25 68 DANA 18437 A3D80 46-13
Is this really a limited slip? And does the 46-13 mean it's got 3.53 gears?
__________________
1964 Chevy C10 - Gen IV 5.3 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=768632 1968 GMC C15 - Gen III 6.0 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=772047 1969 Chevy C10 - Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=809184 1978 Chevy Scottsdale K20 1993 Chevy C1500 - 5.3/T56 swapped 2008 Silverado Duramax |
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#2 |
Registered User
Join Date: Apr 2011
Location: Klein Texas
Posts: 3,852
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Re: Help Identifying Differential
Best differential case made, dana powerlock
__________________
My Classics: '72 K20 Suburban + '65 Dodge Town Wagon '72 Corvette Roadster +'67 Corvette Roadster '73 Z-28 Camaro '63 Ford SWB Uni Pickup '50 Ford Coupe |
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#3 |
Registered User
Join Date: Aug 2009
Location: Bowser
Posts: 13,622
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Re: Help Identifying Differential
Yup, it’s more commonly called a 3.54 ratio.
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#4 |
Senior Member
![]() Join Date: Aug 2018
Location: Western Colorado
Posts: 1,165
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Re: Help Identifying Differential
Awesome, thanks guys. So it's a good rearend to handle my 400 HP LS?
I've done some research on how to replace bearings and seals, but not sure if they need it or not. The truck has 35,000 miles on it and it seems to be a little difficult so if I don't need to replace them I don't want to. I'll know better what condition they're in when I rebuild the brakes.
__________________
1964 Chevy C10 - Gen IV 5.3 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=768632 1968 GMC C15 - Gen III 6.0 Restomod http://67-72chevytrucks.com/vboard/s...d.php?t=772047 1969 Chevy C10 - Restoration http://67-72chevytrucks.com/vboard/s...d.php?t=809184 1978 Chevy Scottsdale K20 1993 Chevy C1500 - 5.3/T56 swapped 2008 Silverado Duramax |
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#5 | ||
"I ain't nobody, dork."
Join Date: Sep 2007
Location: Whidbey Island, Washington
Posts: 8,940
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Re: Help Identifying Differential
You will snap an axle before you'll break that carrier. D44's can handle a bit, but not the most stout axle out there.
Gary
__________________
'cuz chicks dig scars... My 1972 GMC 1500 Super Custom (Creeping Death) "long term" build thread. The Rebuild of Creeping Death after the wreck Quote:
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#6 |
Registered User
![]() Join Date: Aug 2019
Location: Cheraw
Posts: 1,305
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Re: Help Identifying Differential
Those seals are 50 years old. Why are you even asking?
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