RE: ThermoQuad

[Earl Helm <earlh@xxxxxxxxxxxxxx>]

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Paul,

The early model circa 1969-1970 had press-in jets that were
 held in place with an o-ring in a grove in the top end of the jet. 
The later model circa 1971-1972 used screw-in jets. The early 
models were # 4846S for the 850 cfm and # 4847S for the 1,000 cfm 
while the later models were # 4846SA for the 850 cfm and # 4847SA. 
These four digit #'s can be found on the corner of the base plate.

The next generation of T.Q.'s was the one year only oem 1971 
Mopar 340 carb. It shared features with the C.S. series carbs 
in the metering rods and piston, floats, choke pull-off, the top 
bowl gasket and the screw-in jets. This carb is # 4972 for the 
4 speed and # 4973 for the automatic cars.

The carb was reengineered for 1972 and became a solid metered 
carb and thus was a much improved carb in both performance and 
tuneability. This was the first year the carb was used on a big block
 as an oem unit, a Mopar 400 cu in hp engine. Two different but similar 
top plates were used on the 72' 340 engines and can be id'd by 
the # 2007 and 2083 cast into the top plate. All big block carbs 
were the same casting but were slightly different from the 340 carb 
and were 850 cfm's while all 340 carbs were 800 cfm's. In 1973, only 
one carb top was used for for small and big blocks while the mid section 
and base plates were again 800 and 850 cfm specific parts.This was 
the first year used on a Mopar 440 engine and the first and only year 
used on a US manufactured Ford, the 460 cu in engine. It was also the 
first year used on an International Harvestor engine, the 345 and 392 cu in.

In 1974, the top was again slightly revised having an extended accelerator 
pump arm boss and different pump arm linkage that both remained 
through 1984. All 1972-1974 carbs were known as the 6000 series carbs. 
The 74' Ford carb was an 800 cfm with an integral 12 volt choke and special 
accomodating base plate for the choke. The I.H. carb was an 850 cfm.

Earl

-----Original Message-----
From: Skagdrager@xxxxxxx [mailto:Skagdrager@xxxxxxx] 
Sent: Wednesday, November 09, 2005 2:25 PM
To: 1962to1965mopars@xxxxxxxxxx
Subject: ThermoQuad

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Can anybody tell me the cubic feet per minute and date built of a ThermoQuad
with the numbers 6322 S followed below by 016 3 ?
Thanks for any help.

Paul

[Non-text portions of this message have been removed]

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----
Please address private mail -- mail of interest to only one person --
directly to that person.  I.e., send parts/car transactions and negotiations
as well as other personal messages only to the intended recipient, not to
the Clubhouse public address. This practice will protect your privacy,
reduce the total volume of mail and fine tune the content signal to Mopar
topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 

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----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 



bOyW3N.