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Carter AVS or Thermoquad #378649
07/18/09 08:11 AM
07/18/09 08:11 AM
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Posts: 17
Maryland
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otrAlive Offline OP
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otrAlive  Offline OP
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Maryland
I currently have a fuel hose going from the fuel pump to carb and want to install a correct fuel line instead. I have a Demon 750 carb installed now. How can I determine if my 71 Duster 340 originally came with a Carter AVS or Thermoquad carburetor?

thanks,
Floyd

Re: Carter AVS or Thermoquad [Re: otrAlive] #378650
07/18/09 08:15 AM
07/18/09 08:15 AM
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Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
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Lincoln Nebraska
AVS-square bore iron intake. TQ-spreadbore iron intake


live every 24 hour block of time like it's your last day on earth
Re: Carter AVS or Thermoquad [Re: RapidRobert] #378651
07/18/09 08:22 AM
07/18/09 08:22 AM
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Maryland
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otrAlive Offline OP
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Maryland
My apology, I should have mentioned that the car now has an Edlebrock airgap intake...

Re: Carter AVS or Thermoquad [Re: otrAlive] #378652
07/18/09 08:39 AM
07/18/09 08:39 AM
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Posts: 36,041
Lincoln Nebraska
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RapidRobert Offline
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no apology needed & I knew(as I was typing) that I was missing something because if you have a demon right now you would know that it is a square bore. So the Q is does the TQ and or the AVS have the same fuel inlet location as your Demon carb. A suggestion, since you are not OE you could bend up a line much cheaper than purchasing a correct piece


live every 24 hour block of time like it's your last day on earth
Re: Carter AVS or Thermoquad [Re: RapidRobert] #378653
07/18/09 09:06 AM
07/18/09 09:06 AM
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Maryland
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otrAlive Offline OP
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Very good! And, your absolutely correct about knowing the AVS or TQ inlet location. Your suggestion about making up a line is a good one and certainly an idea to consider!

appreciate your responses and help!!!!!

thanks,
Floyd

Re: Carter AVS or Thermoquad [Re: otrAlive] #378654
07/18/09 09:56 AM
07/18/09 09:56 AM
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Blair County,PA
62maxwgn Offline
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Blair County,PA
Quote:

I currently have a fuel hose going from the fuel pump to carb and want to install a correct fuel line instead. I have a Demon 750 carb installed now. How can I determine if my 71 Duster 340 originally came with a Carter AVS or Thermoquad carburetor?

thanks,
Floyd





If an original 340,it came with a Thermoquad.Also,the 71 T/Q is the only air metered T/Q.Not the best design,but work if tuned right.Also,very hard to find if you don't have one. All other T/Q's are solid fuel metered. fuel.

Re: Carter AVS or Thermoquad [Re: 62maxwgn] #378655
07/18/09 11:26 AM
07/18/09 11:26 AM
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Posts: 75,043
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
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U.S.S.A.
Quote:

Quote:

I currently have a fuel hose going from the fuel pump to carb and want to install a correct fuel line instead. I have a Demon 750 carb installed now. How can I determine if my 71 Duster 340 originally came with a Carter AVS or Thermoquad carburetor?

thanks,
Floyd





If an original 340,it came with a Thermoquad.Also,the 71 T/Q is the only air metered T/Q.Not the best design,but work if tuned right.Also,very hard to find if you don't have one. All other T/Q's are solid fuel metered. fuel.




I sold one at carlisle last week for $115 with an NOS rebuild kit everything worked , nothing frozen , I'm guessing I gave it away.

To the OP , does it MATTER what carb your car really HAD? The factory line is not going to fit on your current carb , you'll have to make one as mentioned.

Re: Carter AVS or Thermoquad [Re: JohnRR] #378656
07/18/09 12:03 PM
07/18/09 12:03 PM
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Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
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Posts: 42,714
Spokane Washington
This is what a 71 TQ looks like, they are easy to spot, it's the only year that the idle mixture screws came away from the base at an angle as opposed to straight forward. There were 2 part#'s, 4972 4speed, 4973 automatic. This number is stamped into the mounting foot on the drivers side rear face.

*Yea John, that was a gift, most cores I've seen sell for between $200.00-$275.00 without the kit.







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