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Old 11-20-2018, 03:51 PM   #1
drmatera
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Help indentifiying my auto lock hubs on 73 K10

I'm not really sure what to call them so I didn't get much help using the search feature. I've got a 1973 K10 with auto locking hubs but they have 5 bolts not the typical 6 that I'm used to seeing. This is a weird truck, it's got a manual trans, but it's a 3 speed (no granny gear). Now I've come across this weird hub issue. Please enlighten me
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Last edited by drmatera; 11-21-2018 at 12:17 PM.
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Old 11-20-2018, 04:19 PM   #2
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Re: Help indentifiying my auto lock hubs on 73 K10

ok, so in searching further it appears the auto hubs from 81-87 are 5 screw. So do I have a corporate axle up front?
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Old 11-20-2018, 04:33 PM   #3
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Re: Help indentifiying my auto lock hubs on 73 K10

i think you got your self a mutt boy

but yes there from a 81-up body group . they can fi the older dana 44 axle tho . so make sure you know what style axles you have before ordering parts .

post up a pic of the front and rear pumkins .
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Old 11-20-2018, 04:53 PM   #4
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Re: Help indentifiying my auto lock hubs on 73 K10

Hahaha. Not surprising
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Old 11-20-2018, 05:01 PM   #5
sweetk30
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Re: Help indentifiying my auto lock hubs on 73 K10

yep dana 44 front and gm 12 bolt rear .
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77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
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HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .

EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
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Old 11-20-2018, 05:17 PM   #6
drmatera
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Re: Help indentifiying my auto lock hubs on 73 K10

good to know thank you. So one more question, when I buy manual hubs do I need the conversion nut kit? I guess I also need to find out which transfer case I have. I'll post pics shortly
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Old 11-20-2018, 05:27 PM   #7
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Re: Help indentifiying my auto lock hubs on 73 K10

Ok, not sure if you can tell by these pics what t case I have.
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Old 11-20-2018, 06:36 PM   #8
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Re: Help indentifiying my auto lock hubs on 73 K10

i was just talking about that trans and t-case combo in another thread in the 4x4 section today .

thats a car 4 speed hooked to a np205 part time t-case . that combo is rare . i have seen a few online and 1 in person .

the np205 is a gear to gear part time case . solid as a rock units .

as for the nut conversion i swapped one set out years ago and didnt need it . so best to pull one off and if its the reg old 4 tab nut/washer/nut combo then your golden with just a set of lockouts .

i my self do NOT run warn hubs or most others . the way there designed if they fail they fail open / unlocked .

i prefer the old original spicer hubs or the newer yukon hubs that are a updated / combined best of both style spicer hubs in 1 best package . there a little more $ but great stuff .
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77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
-----------------------------
HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .

EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
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Old 11-20-2018, 06:41 PM   #9
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Re: Help indentifiying my auto lock hubs on 73 K10

Thanks for all the great info.
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Old 11-20-2018, 06:43 PM   #10
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Re: Help indentifiying my auto lock hubs on 73 K10

no problem
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77-k30lb BIG truck build .
87-k30lb budget beater build .
85-k30lb the plow machine build .
85-c10sb summer fun toy .
-----------------------------
HOLLEY SNIPER efi = worst case of p.i.t.a i ever had .

EDELBROCK pro flo 4 = best deal going so far . love my setup works great.
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Old 11-20-2018, 08:32 PM   #11
bhc41051
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Re: Help indentifiying my auto lock hubs on 73 K10

The standard transmission in your 73 K10 would be a 3-speed steering column shift. I think someone converted your column shift to a floor shift. Pretty common back in the day. The only engine choices were a 250 six cylinder and the 350 V8.
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Old 11-20-2018, 08:49 PM   #12
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Re: Help indentifiying my auto lock hubs on 73 K10

Quote:
Originally Posted by bhc41051 View Post
The standard transmission in your 73 K10 would be a 3-speed steering column shift. I think someone converted your column shift to a floor shift. Pretty common back in the day. The only engine choices were a 250 six cylinder and the 350 V8.
The Saginaw 3 speed and Saginaw 4 speed look pretty close on the outside.
AFAIK They only used the 4 speed in the automobiles.
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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


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And please let us know if and how your repairs were successful.
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Old 11-21-2018, 11:21 AM   #13
drmatera
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Re: Help indentifiying my auto lock hubs on 73 K10

Here is a pic of the VIN. I guess this cab could have been from another chassis, so who knows
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Old 11-21-2018, 02:24 PM   #14
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Re: Help indentifiying my auto lock hubs on 73 K10

Hey that's cool!
I only ever saw the 3 spds in Blazers, not pickups.
But they had Dana 20s hooked to them.
Does the steering column still have provisions for a shift lever & linkages?
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Old 11-21-2018, 04:00 PM   #15
drmatera
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Re: Help indentifiying my auto lock hubs on 73 K10

yes the column does still have the remains of the "3 on the tree".
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1985 C20 Suburban (454 / 4L80E)
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Old 11-21-2018, 08:02 PM   #16
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Re: Help indentifiying my auto lock hubs on 73 K10

I learned to drive on a column shift 1950's pickup truck and a 1949 Chevrolet Deluxe with the same.
IMHO the 40's & 50's shift mechanisms were more robust than the ones from the 70's. The column shift mechanism isn't that difficult to learn. It's not unreliable if it's adjusted properly with fresh shift rod bushings and it's a cool theft deterrent.
__________________
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...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
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