Pictoral differences found on G4112 vs G506 (more images)

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algor
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Re: Pictoral differences found on G4112 vs G506 (more images

Post by algor » Thu Mar 07, 2013 1:18 am

forestry4evr wrote:Hello all,

I thought it may be of interest to post some differences found on early WW2 Chevrolet trucks. As those who have done research on these machines know, production evolved during the 5 years of production. Most of the changes certainly were for the better, but history is captured in the early "beta" tested trucks. This is not an all inclusive list of differences, just select ones that I happen to have taken images. This truck is a YP model which I think these differences are the same on ZP trucks (1940-41). Those with "N" series trucks (1942-45) will notice the differences.
It's possible to share a detailed picture of the civilian gauge cluster?
Thanks
Alberto
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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Thu Mar 07, 2013 3:15 am

Alberto,

Here is a picture of the instrument cluster taken out of my DOD Feb 1941 YP model truck. The cluster is the same as a civilian truck, complete with chromed bezel as found under a coat of OD green. ZP trucks should have the same cluster, as the N series trucks will have the more "standard" looking military guages.

Early GMC CCKW's also used this same cluster, but the speedometer head and oil pressure guage are different.

Image
Image showing YP series "civilian style" gauge cluster

Image
Image showing N series military gauge cluster

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by Joe Gopan » Thu Mar 07, 2013 3:53 am

forestry4evr wrote:Last night while tearing down my doors, I did a little investigating. I think I found conclusive evidence that the passenger side door handle is in fact military and most likely original to the truck. If you recall, outside lock mechanisms are only found on the 1940-41 YP and ZP model G4112's, and only on the passengers side similar to civilian trucks in 1941. Now to find a locksmith that can make a new key, can anyone offer any guidance?

Image
Notice OD paint remaining where protected in door, and same style handle as civilian but without chrome plating

Image
Passenger side door handle with lock mechanism

Image
Number found on handle.
___________________________________________________
That 4 Digit Number stamped on the handle is the key code.
They did not use H-700 on the early trucks.
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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Sat Mar 09, 2013 3:28 am

Joel,

I figured the numbers represented a key code. For now, I swapped in a cylinder from a civilian handle/cylinder with key. The internal parts were exactly the same. It will be nice to have a lockable truck in order to keep two legged varmits out.

Do you think any locksmith can re-key the original lock cylinder?

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Tue Apr 09, 2013 8:44 am

Gentlemen,

I found another subtle difference between a 1940-1942late (G4112-G506 early N series) trucks and later ~1943 N series models. The images below show a transfer case lever. Notice that the early trucks have a rounded over edge whereas the later models do not. Another example that form lost out to function as the war raged on.

Image
Image of 1941 lever on left and 1944 lever on right

Image
Close up image of the bar stock edging same levers, 1941 on top and 1944 on bottom

Hope you all are enjoying playing with your trucks!

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by fordm8 » Sat Sep 14, 2013 8:34 am

Hello,

I am the owner of a pannel chevy since some month and very interseted in all the information posted here. Unfotunately the data plate is missing, so the date of manufacturing is not known. It has many early N model items:
early grill, no bo, lockable passenger door, chevrolet marked on the sides, distributor with vacuum timing.

The odd things are: the fuel gauge is marked GAS, ampere meter is marked +/-30A, and there are absolutely no holes for an data plate.

Greetins,

Ryck
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Re: Pictoral differences found on G4112 vs G506 (more images

Post by Tonywan Kanobby » Sat Sep 14, 2013 7:11 pm

O :D M :D G :D

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by Tonywan Kanobby » Sat Sep 14, 2013 7:22 pm

Ryck,

Great truck. But start a "New Topic" and introduce it there. The thread where you posted is for a completly different subject. OK.

Tony

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Sun Sep 15, 2013 3:15 am

Ryck,

Nice panel truck, it is good to see another one out there. Are you in Europe?

I believe the radio (panel) trucks all had locking doors as they held sensitive gear. If your truck is in fact a transitional Y/P to N series, the data plate may have been located on the glove box door, and not on the header panel. The Y and Z series trucks I have dealt with all had the ID and shift pattern plates mounted on the glove box. Your window thumb screw wings are not curved indicating that they are later version N-series (mid 1942+), but that is just one piece of the puzzle as they are easily changeable.

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by fordm8 » Sun Sep 15, 2013 3:30 am

Hi Paul,

yes I live in Luxembourg, Europe.

Do you have a picture of a curved knob? Did early N series have GAS on the fuel gauge?

Greetings,

Ryck

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Sun Sep 15, 2013 4:16 am

Ryck,

I figured you were from on the other side of the Atlantic, you guys have some of the best WW2 machines! Welcome to the G, and I hope you post some more images of your new truck, it looks very nice.

I take back my statement about your windshield thumb screws, upon closer inspection they are the earlier version. The screws from my 2/41 truck are all painted and packed away at present, but I did find an early image of them mounted on my truck. Later versions were not curved to fit your fingers, but crudely "T" shaped I presume as a time/cost saving measure as the war progressed.

Image
Image of my 2/41 interior before disassembly

The military fuel gauges I have all read "fuel" not "gas" so I don't know what to tell you.

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by fordm8 » Sun Sep 15, 2013 8:33 am

Thanks Paul.

Sorry didn't want to hijack your tread.

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Wed Sep 18, 2013 1:51 am

Ryck,

No problem with the hijack, it is good to know there is another Chevy owner out there. Welcome to the "G".

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Thu Nov 28, 2013 2:50 am

Gentlemen,

I found a couple more differences on my 2/41 G4112 from the later G506. You all are most likely familiar with the early and late fuel filler necks/caps; well there is apparently a very early small cap and a later early small cap. I found that the very early cap is the same as used on civilian applications whereas the later small cap is unique to the military vehicles. Too bad I had acquired a perfect NOS military AC small cap and cleaned and painted it before finding this out!

Radiator caps are a similar. It was my impression that all military caps were the same, but not so. My perfect NOS military cap has a too shallow depth to fit the G4112 neck. The cap part number for the G4112 equates to a civilian AC part RC-10.

Image

Lastly for today, I determined that the fuel filter inlet/outlet on the early G4112 filter are 1/8 NPT whereas the later G506 inlet/outlets are ¼ NPT. You may also recall that the casting on the early version only has one inlet and one outlet unlike the later universal T2 housings that have two ports for each. The original fuel line on the G4112 is a ¼ inch line whereas the G506 line is 5/16.

Image

If anyone is looking for a perfect condition NOS NIB cleaned painted ready to install early radiator cap and fuel cap let me know as I have both.

Enjoy!

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by 42cargo » Thu Nov 28, 2013 5:53 am

Thanks for your posts, Paul. All good info for those present and future.


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