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Refueling the Past

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REFUELING
THE
PAST



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Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1349161 Sat Mar 07 2020 07:09 PM
Joined: Mar 2004
Posts: 5,063
M
'Bolter
The GMC version of Chevrolet's LCF is called the "F" Series...

The "F" Series GMC's could have an in-line 6 or a V8, while the Chevrolet LCF's were only available with a V8 (1955-59).

Mike B smile

Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1349190 Sun Mar 08 2020 12:17 AM
Joined: Dec 2002
Posts: 2,596
S
'Bolter
Technically, as Mike B. stated, GMC did indeed call their version of the Chevrolet LCF(Low Cab Forward), the "F" series, but to keep confusion down, most people go ahead and group them as LCF's as the Chevy guys do. My 1952 GMC COE, is actually a "F" model 470 series COE. 47-51 COE trucks were "HF" models, but I just call it a COE.


Spanky Hardy
Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers

1948 Chevrolet 5700 COE Holmes HD W35 Wrecker
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1950 GMC 250 1-Ton
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Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1349805 Fri Mar 13 2020 04:33 PM
Joined: Aug 2016
Posts: 43
F
Wrench Fetcher
Nice truck!

Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350084 Sun Mar 15 2020 02:58 PM
Joined: Nov 2011
Posts: 2,655
P
'Bolter
Hey George,

Do you mind snapping a decent image of the front axle? It looks suspiciously similar to the Banjo axles on my WW2 Chevy. Often wondered if NAPCO sourced components from Eaton when available.

Super cool truck BTW!

Paul

Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350141 Sun Mar 15 2020 10:28 PM
Joined: Oct 2007
Posts: 474
M
'Bolter
Welcome back George!!! You were missed greatly!

Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350249 Mon Mar 16 2020 08:55 PM
Joined: Apr 2007
Posts: 381
N
Shop Shark
Paul, I used military axle parts when I rebuilt the axle. All the seals and wipes were the same. I also have an extra front axle from a Bolter that hasn’t been around for a long time. NAPCO made their start on military trucks and learned to shift to commercial vehicles after the war. Here are a couple more pictures.

Attached Files
84A4534C-BA11-4E07-BBF2-A0525B8B76F7.jpeg (321.92 KB, 163 downloads)
8B707093-5F7D-47CC-BC60-7512A5686DF4.jpeg (330.01 KB, 162 downloads)
Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350332 Tue Mar 17 2020 03:54 AM
Joined: Oct 2018
Posts: 77
C
'Bolter
That's a familiar sight, indeed smile

Looks like the same Chevrolet axle that is under the front of my CCKW. Right down to the two fill plugs - so that the cover can be used on either the front or rear axles.

Servicing the wheel and knuckle bearings, along with the CVs is just about one of my favorite jobs. wink (NOT!) Plan on using up just about every rag you have in your shop...

I'm assuming they used the Chevrolet transfer case, too... The one that spins the front prop shaft in the opposite direction as the rear ?

Best Regards....

Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350346 Tue Mar 17 2020 11:16 AM
Joined: Nov 2011
Posts: 2,655
P
'Bolter
George,

Thanks for the images. Yes that sure does look like the Eaton "banjo" axle used on all of the WW2 Chevys and many of the WW2 GMC's. For years I had thought that NAPCO sourced GI parts on the larger truck conversions. Very cool that your truck still has the NAPCO badging on the axle. I would figure that the transfer case is also GM military as the front axle turns the opposite direction than most front drive axles. As a diehard gear head, I and others would love to see some images of the transfer case and the rear axle...if you would be so kind to share. Does your truck have the 6 stud centered bud style wheels?

Yes that steering knuckle service job is a messy task. Ever notice that very few guys stop to take pictures of that part of a build?, they are way too greasy to handle the camera.

Thanks again for sharing.

Paul

Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350524 Wed Mar 18 2020 04:54 PM
Joined: Apr 2007
Posts: 381
N
Shop Shark
Here are some pictures of the transfer case and rear axle. Note the PTO on the transfer case. I also have a PTO on the transmission. The lugs on the front axle can be seen in the original post. It is a typical 10 lug pattern that a stock Chevy 2 ton would have. My extra front end has the military 6 lug setup. I also have a spare transfer case for a future build.

Attached Files
31F5EDDF-F5C3-478A-894F-E381C6D76D2F.jpeg (286.09 KB, 114 downloads)
90A27ED0-EA76-4347-8F02-CB3339F5C14E.jpeg (294.92 KB, 119 downloads)
AA7C922E-DB8F-4502-9384-6F05087393CF.jpeg (399.05 KB, 116 downloads)
8FEDD144-A323-4AD5-84D9-0DB80028D6E0.jpeg (467.52 KB, 108 downloads)
Re: 1950 Chevy 6100 NAPCO 4X4
Napco Man #1350549 Wed Mar 18 2020 07:22 PM
Joined: Oct 2018
Posts: 77
C
'Bolter
Very cool. Like the brass NAPCO plaques, too.

Looks very similar to mine. Only difference is mine has a second driveshaft and parking brake drum where the PTO is on yours.

"Chatter" on the CCKW sites says to keep an eye on the transfer case to frame bolts, as they tend to loosen up and can cause the case to crack -although I have not personally experienced this on my truck.

The books and TMs always refer to these axles a "corporate" or being made by Chevrolet. Did Eaton make them for Chevy, or was this an Eaton design produced by them ?

Best Regards...

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