Thanks for the tip, Jack. With my '51 AD with a 216, and B model
Rochester carb, only getting about 10 mpg, I had been seriously
considering getting a Toyota truck.
My '51 is a daily driver, so any gas mileage tips are helpful.
Thanks,
Larry
'51 AD, 5 window
Okla City, OK
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On Fri, 8 Oct 1999 06:45:27 -0400 "jack halton"
<safesix@worldnet.att.net> writes:
>I do't know much about the Carter carbs but there were many different
>Rochester model B single barrel carbs offered on GM inlines. They vary
>in
>CFM from about 200 to 250. CFM ratings for inline engines are
>measured
>differently than for V8s so these numbers don't compare to 4-barrel
>specs.
>Some (model BB) had electric chokes and these were in use at least
>through
>the early 60's.
>
>They are not a bad carburetor, very simple in operation and easy to
>work on.
>But they have a bad reputation as "leakers" because the float chamber
>can
>get distorted from overzealous tightening of the top cover screws.
>Throttle
>shafts can get badly worn too. Last I heard, Rochester "B" carbs were
>in the
>$90 range, rebuilt. Gas mileage was not a big concern in the era these
>carburetors were used, though. If you consider that the newest of
>these
>carbs is now approaching 40 years of age, It may be preferable to look
>for a
>more modern replacement. The Rochester "Monojet" is a more modern
>design and
>was used on the later family of GM inlines, it's pretty much a bolt-on
>replacement.
>Also worth considering is the Holley-Weber staged 2-barrel. Requires
>an
>adapter to the stock manifold and some linkage modification, but gas
>mileage
>and driveability are improved.
>
>Jack / Winter Park FL
>----- Original Message -----
>From: Antonio R. Tijerino <antonio@innercite.com>
>To: Ole Trucks <oletrucks@autox.team.net>
>Sent: Friday, October 08, 1999 1:49 AM
>Subject: [oletrucks] Carb question.
>
>
>> I hope this is not a FAQ, but for the AD trucks with the 235 engine,
>> which carb is better? The rochester or the Carter? What are the
>> differences and the CFM specs of each? Which one would go better
>with a
>> dual exhaust setup, but with single carb? Also within each of these
>two
>> carbs, are there different models of each?
>>
>> Thanks,
>>
>> Antonio,
>> '53 3100
>>
>> oletrucks is devoted to Chevy and GM trucks built between 1941 and
>1959
>>
>
>oletrucks is devoted to Chevy and GM trucks built between 1941 and
>1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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