Help indentifiying my auto lock hubs on 73 K10 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

drmatera · 11-20-2018, 03:51 PM

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

drmatera · 11-20-2018, 04:19 PM

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?

sweetk30 · 11-20-2018, 04:33 PM

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 .

drmatera · 11-20-2018, 04:53 PM

Hahaha. Not surprising

sweetk30 · 11-20-2018, 05:01 PM

yep dana 44 front and gm 12 bolt rear .

drmatera · 11-20-2018, 05:17 PM

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

drmatera · 11-20-2018, 05:27 PM

Ok, not sure if you can tell by these pics what t case I have.

sweetk30 · 11-20-2018, 06:36 PM

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 .

drmatera · 11-20-2018, 06:41 PM

Thanks for all the great info.

sweetk30 · 11-20-2018, 06:43 PM

no problem

**bhc41051** · 11-20-2018, 08:32 PM

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.

**hatzie** · 11-20-2018, 08:49 PM

Quote:

Originally Posted by bhc41051

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.

drmatera · 11-21-2018, 11:21 AM

Here is a pic of the VIN. I guess this cab could have been from another chassis, so who knows

andyh1956 · 11-21-2018, 02:24 PM

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?

drmatera · 11-21-2018, 04:00 PM

yes the column does still have the remains of the "3 on the tree".

**hatzie** · 11-21-2018, 08:02 PM

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.

11-20-2018, 03:51 PM	#1
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	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 Attached Images __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E) Last edited by drmatera; 11-21-2018 at 12:17 PM.

11-20-2018, 04:19 PM	#2
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	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? __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-20-2018, 04:33 PM	#3
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	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 . __________________ 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.

11-20-2018, 04:53 PM	#4
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	Re: Help indentifiying my auto lock hubs on 73 K10 Hahaha. Not surprising Attached Images __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-20-2018, 05:01 PM	#5
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Help indentifiying my auto lock hubs on 73 K10 yep dana 44 front and gm 12 bolt rear . __________________ 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.

11-20-2018, 05:17 PM	#6
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	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 __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-20-2018, 05:27 PM	#7
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	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. Attached Images __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-20-2018, 06:36 PM	#8
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	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 . __________________ 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.

11-20-2018, 06:41 PM	#9
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	Re: Help indentifiying my auto lock hubs on 73 K10 Thanks for all the great info. __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-20-2018, 06:43 PM	#10
sweetk30 Registered User Join Date: May 2012 Location: horseheads,ny rust belt Posts: 2,794	Re: Help indentifiying my auto lock hubs on 73 K10 no problem __________________ 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.

11-20-2018, 08:32 PM	#11
bhc41051 Senior Member Join Date: Apr 2012 Location: Otway OH Posts: 788	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.

11-21-2018, 11:21 AM	#13
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	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 Attached Images __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-21-2018, 02:24 PM	#14
andyh1956 Registered User Join Date: Mar 2010 Location: thomastown mississippi Posts: 1,261	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?

11-21-2018, 04:00 PM	#15
drmatera Registered User Join Date: Aug 2016 Location: Nicholson, Ga Posts: 134	Re: Help indentifiying my auto lock hubs on 73 K10 yes the column does still have the remains of the "3 on the tree". __________________ 1981 K10 (4.8 / 4L60E swap) 1982 C10 (5.3 / 4L80E swap) 1985 C20 Suburban (454 / 4L80E)

11-21-2018, 08:02 PM	#16
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	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... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF 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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