2010 at the Hammond Barn

[Grant Bowker]

Originally Posted by Bob Carriere

In any event it seems I need to find the kind of carburator that may have been installed on the GMC 270..... but.... from my 1955-59 civvy GM manuals they show and list the same Rochester B as the 261.
Bob

TM 9-801 lists the CCKW as using Zenith carbs, type 28AV11 on early vehicles an type 30 BW 11GM on late vehicles. I have not checked the various TM10s to see if any very early vehicles used something else.

The C60X used a Zenith 28AVII (according to the maintenance manual)

The C15TA used a Zenith carb for the first jobs and a Carter Dustproof carb for the after jobs according to the parts book but the maintenance manual only lists the Zenith 28AVII.

Although the American and Canadian listings describe the Zenith carb differently 28AV11 as opposed to 28AVII (eleven as opposed to eye-eye) I suspect they are the same thing.