dual 4 bbl carbs

[kenpodude]

Looking for information on what years and models a dual 4 bbl carb was offered on a 331 motor.  Would it be correct on my 52 convertible.

Thanks for your help

Marty

[Mike Josephic CLC #3877]

Hi Marty:

Duel quads were only offered in 1955, 1956 and 1957 (for '57 as an option).

For your 1952,  331 engine, the correct carb was the single  4 barrel
(4 BBLWCFB-896S) by Carter.

Hope that helps,

Mike

[kenpodude]

Thanks Mike

   Any idea of the rarity of such a setup and what the value might be?

[Mike Josephic CLC #3877]

Marty:

If you're asking about the correct single quad for your car -- the "896S" was used
only in 1952.  However, it shouldn't be too hard to get.


A rebuilt one should be about $250.00 - $300.00 (my guess).

Check this website out:  http://www.thecarburetorshop.com/Carbsale.htm
Their site states they have it in stock but you'll have to call them for a quote.

They sell both carbs & rebuild kits. 

Good luck!

Mike

[EAM 17806]

MARTY!  i WOULD SUGGEST YOU CONTACT THE FOLLOWING CARB SHOP IN NEW HAMPSHIRE:  HOBBS' CARBURETOR SHOP, 28 WINDHAM ROAD, PELHAM, NH, TEL # 603-635-2415.  THIS SHOP IS TOPS WITH CARBS, THAT'S ALL THEY DO AND THE SERVICE IS EXCELLENT.  GOOD LUCK!  EAM

[John Washburn CLC 1067 Sadly deceased.]

Mike,

There were two Carburetor manufacturers for 1952, Rochester was the other one. The Carb # is 7004500 for 1952.

John Washburn

[Mike Josephic CLC #3877]

Thanks John -- I'm sure our friend will appreciate that info.

My spec book doesn't show a Rochester for '52 -- but it covers all Caddies from
1930 to 1969.  I don't have a detailed manual (such as a shop manual for '52)
so your info would be more correct if you have that!

Mike

[John Washburn CLC 1067 Sadly deceased.]

Mike,

I do, I do. The shop manual for 1952 shows both Carter and Rochester as does my master Rochester book.

Have fun.

john

[kenpodude]

Hi guys

    Actually what I have is a dual 4bbl set up for a 331 motor and was wondering if it would be correct for my "52 convertible".   I've had this "52 since Aug of 63  (my first car).

I had the dual 4's on the 52 for a few months in "66" but even at $ 0.27 a gal I couldn't afford to feed it.  The 52 needs a frame up restoration and I was considering putting the duals back on but wasn't sure if it was correct.  Since I can't use them I'll be putting them up for sale and trying to find out what would be a fair asking price.  The "52" may also be availabe if I can't get the time and space to work on it (Too may toys in the garage and not enough time to play with them all).

Marty

[Mike Josephic CLC #3877]

Marty:

In order to answer your value question we ned more info.  What brand
of carbs are these (Rochester or Carter). Are the tags still on them -- if so,
what numbers do you see?

Mike

[kenpodude]

Hi Mike

   The Carbs are Carter, both tags are still on them. The front card is #2371S  A6, Rear carb #2372S  A6.  I tried attaching pics of the set up I hope they come thru. If not it has the throttle linkage, heat tubes, fuel lines and AC fuel filter

Thank again for your help

Marty

[kenpodude]

Sorry guys
Fat fingered the keyboard and posted the wrong pic. Nice clock case though.

Marty

[Mike Josephic CLC #3877]

Marty:

According to my book, that set up is off a 1956 Eldorado.  The carb numbers
match.  Those two carbs with the manifold and the rest of any linkage
should fetch a nice price on E-Bay -- I would guess close to $1,000.

BTY, the 331 V8 was bored out to 365 cubic inch in 1956 -- so if that
manifold fit your 331, it may be a mixmaster set (??).  In other words, I'm not
ceratin that manifold would fit both engines.  Did you actually have this on your
1952?

Mike

[Mike Josephic CLC #3877]

Marty:

Here'e a guy on E-Bay with the same outfit you want to sell.
http://cgi.ebay.com/ebaymotors/Cadillac-El-Dorado-dual-four-barrell-manifold-carbs_W0QQcmdZViewItemQQcategoryZ34198QQihZ012QQitemZ220254445064QQrdZ1QQsspagenameZWDVW

He claims that the set fits the 331 and the 365 -- I can't swear to that but FYI.

Mike

[Carl Schreiber]

Marty -

You'll find Mike is VERY correct on ALL of the stuff he comments on - we're lucky he's a (mid 50's) Cadillac guy!

One other thing I'd like to add so you can avoid any post-sale problems - the manifold and carbs may bolt up to a 331 and/or 365, but WILL NOT fit under the hood of a 57 - 58 Cadillac. 

One of the major styling changes from 56 to 57 was a lowering of the hood line between the fenders.  As a result, intake manifolds, air cleaners and even the carburetors are all SHORTER for 1957 - so that the assembled height would fit under a closed 1957 hood.  I use the charts from 'the Carburetor Shop' referred to earlier in this thread to determine the proper application by casting number.

Bottom line - will it bolt up? Probably.  Will the engine run?  Probably.  Will the hood close? Most likely not on a 57 (or 58).

Carl Schreiber
CLC #23157

[kenpodude]

Hi Mike

   Thanks for the info, exactly what I was looking for.  but that raises another question. What is the difference between the 2 carbs having having different tag numbers.
  I did have them on the "52" for a short while but the gas milage went from approx 14 to less than 8 mpg.  Although admittedly I did have trouble keeping my foot out of it. 
   Close to $1000.00   Wow!  not bad for the $20.00 original investment,

d

[Roger Zimmermann]

BTY, the 331 V8 was bored out to 365 cubic inch in 1956 -- so if that
manifold fit your 331, it may be a mixmaster set (??).  In other words, I'm not
ceratin that manifold would fit both engines. 

The part number for the '55 & '56 intake manifold with the 2-carb set-up is the same.

[Mike Josephic CLC #3877]

Marty:

They have two different tag numbers since one is the "front" carb and the other
of course the "rear" -- it has to do with how the linkage bolts up and some other
minor differences with the fittings.

Mike