CCKW PARTS

[James G. Davis]

Can anyone tell me what parts, if any, were common to the hard cab CCKW and the G-7100 1-1/2 ton 4x4 military Chevrolet?

What was the rationale behind producing CCKW differentials in Banjo and Split versions?

How many CCKW differentials were produced as Banjo and how many as Split?

Thanks and Aloha,
Ranger Jim

[42cckw]

Ranger Jim
The reasoning behind the two types of axles was at first all GMC trucks were built with the timken type axle before the war started, but it soon became obvious to GM that timken was not going to able to supply the quanities needed to meet the production demand, Timken was also supplying Studebaker trucks with split axles, so they turned to the Chevrolet division to supplement the supply and came up with the banjo axle. Both type of axles have there pro's and con's but they were made in about equal numbers on all GMC trucks. Chevrolet trucks all had the banjo axle and were produced in lesser numbers than the GMC with some 570,000 GMC trucks being made. The closed cab on the GMC and Chevrolet are the same and interchangeable, with GM making both vehicles it solved a lot of supply problems.

JIM 42CCKW

[James G. Davis]

Hello Jim,

Thanks for the info. Since GMC built the cabs for both the CCKW and the Chevy G-7100 is it safe to say the hood, hood panels, fenders, radiator grills, bumpers and bumper brackets are interchangeable?

Thanks,
Ranger Jim

[John V Cliche]

Excuse me for cutting in 42

Most of the cab sheet metal is the same ( same vendor) as are several interior details dash (late) glove box etc.
GMC built thier own cabs
Chevy built thier own cabs
The cab floors are not interchangable either
The hoods are interchangeable as are the fenders but there is a difference in reinforcing between the 2.
The engine side panels are the same shape/size but as you know they are not the same ie;1/2 louver versus full louver
I think the lower engine panels maybe the same ??????
The frame brkts are not the same , they are not even all the same between Banjo axled trucks and Timkin axled trucks and certainly not the same between 1 1/2ton and 2 1/2 ton
Banjo axled chevys and cckw do however have a fair amount of interchangable axle parts
Rad.bumpers and brkts all different as are grills
Winch is the same but mounts and ptos not interchangable either.
And the list goes on and on
Hope this helps
John

[dr deuce]

If you own a Chev and a CCKW (banjo) closed cab, you will come to the conclusion that something "funny" was going on....

There was no reason for some of the differences:

You can change a radiator easier on a CCKW because the top of the radiator bracket comes off (I may take a CCKW bracket an cut the bottom down to size for the Chev K51 panel for this reason)

The extra controls on the dash on a Chev are in a different place than on a CCKW

As John stated, the reinforcements on the front fenders are different and cause different problems

The fuel filter is cut into the lower rear corner of the cab on a Chev, much better than a CCKW

The front brake hose replacement is much easier on a Chev than on a CCKW

and on and on....

Of course, this all means different part$ to supply to the governmint

But I digress

[James G. Davis]

Gentlemen,
My thanks to each and all of you for supplying some very useful info. Now I can answer some questions from a friend in the Netherlands.

Any of you spend time behind the wheel of a CCK (6x4 GMC - 2-1/2 ton)?
Great road truck. Go like hell if you open up the governor.

Not computer smart enough to attach pictures here, so text will have to do. Possibly before Pearl Harbor the Army had built on CCKW cabs and chassis these trucks:
A 700 gallon water tanker by Columbian Tank Company. Appears to be special bed with the tank set into an opening in the bed. 50 were reported built. Appears to be a LWB. Anyone know this truck and have info on the water distributing pump and its engine?

A liquid chemical truck built in 1941 on a SWB CCKW cab and chassis. Any info will be appreciated.

Aloha,
Ranger Jim

[Degsy]

The tankers you mention are pictured in 'The GMC 6x6 and DUKW A Universal Truck' by Boniface and Jeudy, Colombia built 2 versions of the
700 gallon water tanker, one with a single manhole, the other with two manholes, dimensions are shown but no details of the pump and engine.The chemical tanker had a capacity of 500 US gallons mounted on a 352 swb chassis and was used by the Chemical Warfare Service but no other details are given. The book is now out of print but copies are sometimes available on Amazon etc. It is originally a French book but the English version has the ISBN no 0 85429 860 6.
Hope this is some help to you.

[James G. Davis]

Hello,
Have found Boniface and Jeudy's efforts on WW II fire trucks laden with errors (I own that chapter in English and French) so anything they write I find suspect. Have trying to contact them for 15 years by postal and E-mail and Europen friends with no success.

The 700 water water tanker with the two fill hatches aaccording to recent contact with Columbian Steel Tank was not built by them, but rather by Butler.

I am totally puzzled now. Any thoughts?

Ranger Jim

[Degsy]

Hi Jim, I don't claim to know anything about these tankers, the only other mention I can find in my books so far is in Vanderveen's Fighting Vehicles Directory where an identical pic of the 700 gall Colombian single manhole tank is shown. He states that various other tankers were supplied on the GMC chassis but gives no other details.