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#26 |
Registered User
Join Date: May 2012
Location: Bangor Maine
Posts: 84
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Re: 4x4 Problems
This is the front axle.
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#27 |
Registered User
Join Date: Feb 2015
Location: Lester West Virginia
Posts: 244
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Re: 4x4 Problems
The rear is a 12 bolt need better picture of the other 2 take one of the cover on the front axle
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#28 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: 4x4 Problems
Do you have the SPID (Service Parts Idenitification) tag in the glovebox or on the front LH inner fender?
The build sheets are usually in the seat springs if it hasn't been swapped. My 76 had a 1980 build sheet in the seat springs. A 1977-80 K10 or K20 could have either an 8 1/2 inch 10bolt or Dana 44 in the front. The 10 bolt will have an Oval cover. The Dana axle covers are an odd hexagon. Dana Axle ID Through 1980 ![]() Front Axle ID From GM Quick Req The 77 & 78 front axle identification codes are on page 26 of the 73-78 parts book Identification numbers (bill of material) from DANA.
That rear axle looks like a GM Truck 12 bolt. Not surprising on a 77 K10. The rear axle codes are in the 73-78 parts book pages 27-37. You'll find your ID stamped into the RH axle tube.
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 01-16-2016 at 12:31 PM. |
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#29 |
user # 2756
![]() Join Date: Jun 2001
Location: Chesapeake, Virginia
Posts: 4,612
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Re: 4x4 Problems
front looks like a dana44, I don't see the 10 bolts "ears". The transfer case looks like a NP205.
__________________
1970 K25, 8' stepside bed 350/465/205 44 up front, 60 in the rear 4.10s rolling on 33" Dunlop MTs 1986 K5, 350/465/208 Dana 60/14 bolt from a cucv 36" Super Swampers TSL/SX 1983 K20 w/ CUCV axles, 350/700R4/208 sitting on 37" Goodyears 1986 M1031 6.2 diesel, TH400/NP205 locker in the rear and a LS in the front, all stock for now..... 1986 K30, 350/400/205 dana 60 and 14 bolt. I kept the drivetrain. Body/bad and chassis are gone. 1981 K30, 350/465/205 dana 60 and dually 14 bolt. Has a G80, and a flat bed. Going to replace the flat bed. 1985 K20, 350/400/208 10 bolt and SF 14 bolt. I wonder where I can find some 1 tons. Hmmmmm ![]() |
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#30 |
Registered User
Join Date: May 2012
Location: Bangor Maine
Posts: 84
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Re: 4x4 Problems
I am pretty sure they are both dana axles and is a np205 transfer case, it would make sense if they were. I couldn't find the build sheets is there any other of finding out that information. Maybe through Chevy some how?
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#31 |
Registered User
Join Date: Oct 2013
Location: Maine
Posts: 2,356
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Re: 4x4 Problems
Post #10 will point you in the right direction.
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76 Chevy K20 76 GMC K15 77 Chevy C10 77 Chevy K10 |
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#32 | |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: 4x4 Problems
Quote:
The front axle is a likely a Dana 44. See the Front Axle Ident guide in post #28. There are zero good pictures of it. If it's not a 1967-1972 or earlier model (Dana 60) or a Dually (Dana 70) you don't have a Dana axle in the back... And the picture doesn't look Dana either. On a 1/2 ton it's either a GM 10 bolt or a truck 12 bolt. It will not be a 10 bolt in 1977. As I stated earlier the rear axle is a 12 bolt truck axle. If you don't believe me look here...http://coloradok5.com/axleguide.shtml 8 3/4" 12bolt gasket and cover ![]() ![]()
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. Last edited by hatzie; 01-15-2016 at 01:51 PM. |
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#33 |
Registered User
Join Date: Jan 2009
Location: Calgary, AB
Posts: 1,181
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Re: 4x4 Problems
Poor shot of transfer case... Need to see it from behind not the side. From first glance I'd say NP203 but without seeing the middle who knows still.
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#34 | |
Registered User
Join Date: May 2012
Location: Bangor Maine
Posts: 84
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Re: 4x4 Problems
Quote:
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#35 |
Moderator
![]() Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,951
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Re: 4x4 Problems
Limited slip carriers are available for just about every axle put in these trucks.
The front Dana 44 could have Limited slip carrier installed by someone... I did on my 76 for a while.
__________________
1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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#36 |
Registered User
Join Date: May 2012
Location: Bangor Maine
Posts: 84
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Re: 4x4 Problems
Ok thankyou for all the information.
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#37 |
Registered User
Join Date: May 2012
Location: Bangor Maine
Posts: 84
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Re: 4x4 Problems
I do have one more question for you sense you seem to know your stuff. What year and model truck would these rims have come on.
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