Quadrajet carb

[gerald schmitt]

>Me again - I had my carb overhauled locally last year and fear they used a
>standard Olds kit rather than the kit for the motorhome. How can I tell????
>
>Can I get the proper kit locally & what part # for 73 model 455 ?
>
>Lanier
>Trying to get to MB

I doubt ther is any substanitive difference between various kits. The usual
way a
kit is selected is by the model number on the carb. This is found on a
small metal
plate under once of the body screws or stamped into the float bowl body in
a flat
area. More to the point is the shop that did your QJ experienced in QJs
they have
some tricks that need to be done to work properly for a long time.

Jerry

 

[gerald schmitt]

>In a message dated 3/9/99 10:21:15 AM Central Standard Time, ggs
>writes:
>
>>
>> area. More to the point is the shop that did your QJ experienced in QJs
>> they have
>> some tricks that need to be done to work properly for a long time.
>>
>> Jerry
>>
>Not too sure on that point, but pretty good mechanic. I thought there was a
>difference in the size of the jets or something I've seen here on the net.
>Lanier

Jets and metering rods are not part of a kit so that point is moot. Most of
the
non polution control vehicles of that period ran a bit rich so I would expect
the GMCs did have bigger jets and perhaps tapered rather than stepped
metering rods. I managed to get an original QJ intended for the coach from
a mechanic who had installed a Holley 750 CFM and Edlebrock Torquer
manifold on a GMC. I got a kit based on the carb number and it covered
at least 25 different QJ models. Mostly what you get out of a kit that you
really need is an accelerator pump, gaskets, and a needle/seat assembly.
Some extensive kits used to have floats I don't know if they still sell them
that way. Most of a rebuild is cleaning and readjusting and in the case of
a QJ fixing the jet well leaks. The Quadrajet got me through grad school
but that was a looong time ago.

Jerry