What model carburator is on the GMC Fox Armoured Car?

[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.