Thermoquad question
#242347
03/03/09 08:39 PM
03/03/09 08:39 PM
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Anonymous
OP
Unregistered
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Anonymous
OP
Unregistered
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hey guys, came over from the slantsix.org site. Upsizing my B Body to a '72 340 automatic.
there is a thermoquad 9203s available on ebay. manual says that model was for a 79-80 345 auto/IHC
will this carb work well on my 340?
thanks so much for your input
Keni
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Re: Thermoquad question
#242348
03/03/09 08:51 PM
03/03/09 08:51 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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welcome here. I'd contact demonsizzler on this site
live every 24 hour block of time like it's your last day on earth
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Re: Thermoquad question
[Re: RapidRobert]
#242349
03/03/09 09:01 PM
03/03/09 09:01 PM
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Joined: Jun 2008
Posts: 565 IA
landon1
mopar
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mopar
Joined: Jun 2008
Posts: 565
IA
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i don't think you want that carb...you should try to get a 71 or 72 carb (pre-smog emissions) or try and hunt down a superquad (aftermarket TQ)- that's the route i was going to try, because of the electric choke feature, then you don't need the correct intake
'71 Satellite Sebring 440
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Re: Thermoquad question
[Re: landon1]
#242350
03/03/09 09:56 PM
03/03/09 09:56 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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If you want to find one you can rebuild yourself and run, find one of the 6000 series, ie the first number is a 6, the other 3 are anything else. The 9000 series are the smogger carbs, which would need some rejetting and other mods before being good to use. The Vaanth Thermoquad Guide has all the numbers you need to see: http://members.shaw.ca/crussel/thermoquad/tqguide.html
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Re: Thermoquad question
#242351
03/03/09 11:11 PM
03/03/09 11:11 PM
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Joined: Jan 2003
Posts: 14,610 Not2farfromNashville, TN
Rug_Trucker
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,610
Not2farfromNashville, TN
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That carb is for the International Harvester 345 engine. I may actually have one of those. It won't work linkage wise on a Mopar. I'll be up early tomorrow. Give me a call. BTW you don't want a '71 model 340 carb.
"The only thing to do for triumph of evil is for good men to do nothing"
"NUNQUAM NON PARATUS!"
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Re: Thermoquad question
[Re: cdp]
#242356
03/04/09 10:35 PM
03/04/09 10:35 PM
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Joined: Jan 2004
Posts: 8,240 fredericksburg,va
cudaman1969
master
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master
Joined: Jan 2004
Posts: 8,240
fredericksburg,va
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71 carbs are not the way to go, hard to find, and backwards from 72 and up. 72 to 74 or 75 where the best because of the fuel inlet pos. and not all the add on emmision crap. the trap door is the secret to making these work right. there where to types, get the larger front barrels,440 cars, jury rig a choke and keep working with the rods and plunger springs, depends on the vacuum at idle,i.e. cam, good luck
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Re: Thermoquad question
[Re: cudaman1969]
#242357
03/05/09 01:57 AM
03/05/09 01:57 AM
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Joined: Jul 2008
Posts: 30,424 Florida STAYcation
dOrk !
The village idiot's idiot
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The village idiot's idiot
Joined: Jul 2008
Posts: 30,424
Florida STAYcation
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Quote:
the trap door is the secret to making these work right.
The TRAP DOOR ? ... now that is a NEW TERM that most have not heard of !! .... Would that be the secondary air valve ? ... well do I have the TOOL for you ! ..... and it is new and improved from the OEM piece.
That is a major consideration ... but there is a little more to be concerned with than just that.
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Re: Thermoquad question
[Re: CJK440]
#242359
03/05/09 10:24 AM
03/05/09 10:24 AM
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Joined: Jan 2003
Posts: 42,714 Spokane Washington
ScottSmith_Harms
Mr Wizzard
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Mr Wizzard
Joined: Jan 2003
Posts: 42,714
Spokane Washington
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Quote:
Really??
The Comp series TQ's are not legal for F.A.S.T. and if I remember correctly has some pretty significant visual differences too.
Right, I haven't heard that one either.
But in thinking about it, I do see guys running different TQ part#'s other than what's production line correct for thier cars and nobody seems to give them any flack over it, I don't see why they couldn't use a Comp carb just as easily?
They do have some obvious differences, but most aren't visible with the air cleaner on, where do you draw the line when NEITHER carb is correct?
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Re: Thermoquad question
[Re: ScottSmith_Harms]
#242360
03/05/09 10:31 AM
03/05/09 10:31 AM
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Joined: Jan 2003
Posts: 9,982 Ansonia, CT
CJK440
master
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master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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The numbers don't matter in FAST. A 73 340 TQ can be put on a 72 340 car.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Thermoquad question
[Re: ScottSmith_Harms]
#242362
03/05/09 11:09 AM
03/05/09 11:09 AM
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Joined: Jan 2003
Posts: 9,982 Ansonia, CT
CJK440
master
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master
Joined: Jan 2003
Posts: 9,982
Ansonia, CT
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I do agree there is some gray area with the way the FAST rules read. When we revised the rules for Supercars we opened up the carb rule to eliminate confusion. You can run any carb as long as it appears externally similar as the OE peice. To meet FAST rules I had to take an 800 TQ and machine it to accept 850 throttle plates. In Supercars I could just go find a similar appearing 850 and plop it on. The good news for Mopar guys is the cars that left the factory with a 625 with a little cosmetic work, can take advantage of Edelbrocks line of larger AFB's and AVS's and be competitive now in this series.
2017 Contusion Blue Challenger T/A 392 M6 "BLKNBLU"
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Re: Thermoquad question
#242364
03/08/09 10:40 PM
03/08/09 10:40 PM
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Anonymous
OP
Unregistered
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Anonymous
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Unregistered
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"If you want to find one you can rebuild yourself and run, find one of the 6000 series, ie the first number is a 6, the other 3 are anything else.... The Vaanth Thermoquad Guide has all the numbers you need to see:"
OK with TQ guide in hand here's what i have found that I think would work:
-6139S is for a '72 340 automatic (needs a rebuild). -6324 is for a 73 HP 440 automatic (newly rebuilt) -6090 for a 72 400 auto (newly rebuilt) **4968 Carter AVS for a 71 HP440 auto (newly rebuilt)
will any of these other carbs work well on my 340 ? Will a carb for a 440 HP be too much?
sure appreciate all your feedback. I could talk all day about slant sixs and super sixs. But this muscle world is all new to me!
Keni
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