What model carburator is on the GMC Fox Armoured Car?

[Mike Cecil]

Not sure if this helps or hinders but my parts lists are as follows:

(1) C60X-03, dated January 1944, lists the carbie as 'Part Number 2135998, Carburetor assembly. (When stocks depleted use 5814938) (Zenith Model 28AV11).

(2) The Illustrated spare parts list for Canadian Armoured Car GM Mk.1, model AC-chassis 8446, dated March 1942, and relevant to contract numbers British: Supply Mechanical 1077; Australian D463/202H; Canadian CDLV 125 and 227, the carbie listed is 'Part Number 2135998, Carburetor assembly (Zenith Model 28AV11).

Neither list (1942 or early 1944) mentions a Carter carbie as an alternative. Note that the 2135998 change to 5814938 was 'when stocks depleted', rather than as a product improvement changeover.

Mike C

[Grant Bowker]

With C60X-03 dated January 1944 and C60X-04 dated January 1945 it seems that any change to Carter carburetors for the C60X would have happened (or possibly only been planned to happen) between those dates.
My list for the Fox (CAC-02, dated February 1943) also makes no mention of a Carter option.
In a listing of Approved Vehicle Parts Lists for Canadian Army Vehicles dated September 1949, CAC-02 and C60X-04 are the last published versions of the parts lists mentioned for the Fox and C60X respectively.
Based on these lists I would guess that the Carter could have been used in late C60X but wasn't likely used on the Fox. This doesn't mean that the Carter might not work well in a Fox since they both used the 270 engine, but there doesn't seem to be a parts listing of production of Fox with Carter.
It is quoted that there were 2710 C60X produced with about 1500 going to Russia. CDLV407 dated Dec 41 was for 500 vehicles (I believe this was the start of series production) http://www.mapleleafup.net/forums/showthread.php?t=7491. C60X produced in Aug 42 seem to have been CDLV 587 and Dec 42 to Jun 43 CDLV1516. I don't know how many were in the last 2 contracts mentioned, which other contracts existed for the C60X or the dates and numbers involved.

[Mike Cecil]

.... and 468 C60X went to Australia, so that's nearly 2,000 accounted for in exports to two allies, from a reported total production of 2,710, leaving 700 to 800 in CDN service, or did the Brits get some as well?

Mike C

[Stefan Leegwater]

Unfortunately I do not have a lot of time to dig into this, but in a quick look in a Staghound book, they mention that for this type they used the Carter W1 carb. I bet it is adjusted to the bigger 270 engine.

Kind regards,

Stefan

[Stefan Leegwater]

two more pictures!

In the C15TA (also 270 engine) they used zenith and Carter W1-589S Dustproof this is the one we have for sale.

Regards,

Stefan

[Jim Burrill]

I found this on ebay:1936 1937 38 1939 1940 1941 42 43 44 45 46 GMC Chevy Zenith NEW Carburetor 28A11

And Bruce had told me this:
"The Fox carb is a Zenith 28A VII series. I don't know how common they are but bet they are because I think they are also used on GMC CCKW's etc and more than likely on pre and post war civilian GM trucks. The good thing (if they are available) is that they are the right size for a vehicle like a Humber. I imagine they could be adapted to your manifold with a simple custom plate. The hose and throttle hookups might need some thinking.

I can't tell you how the Fox is on hills (I'm in SW Ontario. We don't HAVE any hills) but from loading I expect it would not do well. It is a loaded 3 ton truck and even CMP 60 cwts (with a 216 and not a 270 I agree) barely haul their empty weight up long, slow hills. It was not uncommon for me to crawl up hills labouring in 3rd gear yet too many revs for second. If I has to guess I bet both your Humber and my Fox were never great on hills. The best I've done on a flat highway is just over 30 mph. I think I could have coaxed more out of her but it would have taken work."

I will see when this comes in and then get a fresh rebuild kit to replace all the diaphragms and rubber.

We are also pursuing using a more modern Rochester single barrel carb.