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04-08-2016, 07:56 AM
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#1 |
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Junior Member
Join Date: Feb 2010
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4972s thermoquad
hi ,I have a thermoquad 4972s ,1971 340 duster 4 speed ,how much cfm for this carb ,thanks
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04-08-2016, 09:29 AM
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#2 |
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Member
Join Date: Oct 2002
Location: PORT ORANGE FL
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Re: 4972s thermoquad
They are advertised as 800 cfm but they flow more like 750 cfm hope this helps
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Denny Steward GT/JA 246 |
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04-09-2016, 03:38 AM
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#3 |
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VIP Member
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Location: Boulder City, Nevada 89005
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Re: 4972s thermoquad
I have had good success running that
number on our stockers. They flow about like any other small primary Thermoquad. I wish I could find another one......I find them easier to tune.
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John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 04-09-2016 at 03:40 AM. |
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04-09-2016, 09:26 PM
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#4 |
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Senior Member
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Location: TN
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Re: 4972s thermoquad
So what is a ford guy doing with a Mopar carb. I would be glad to take it off your hands.
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Rod Greene Real men shift for them selves. Slowly working on TA Challenger for D,E/S and a 72 Challenger for SS/K, L as if I don't have enough other projects. |
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04-11-2016, 10:48 PM
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#5 |
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Veteran Member
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Re: 4972s thermoquad
The '71 carb is harder to find jets for, unless you convert them to holley jets. Just sayin'. I prefer the 6138 or 6139 carb from the '72 340. Jim
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Jim Wahl....NHRA #2239 S/SS - IHRA # 8 Stock, D2 Stock Champion (forever I guess) 2019 Baby Gators Stock Champion 2009 D2 National Open Stock Champion 1981 D2 West Palm Beach LDRS SS Runner Up Past President, Southern Stock / Super Stock Association. 
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04-11-2016, 11:14 PM
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#6 |
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Senior Member
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Location: Modesto, CA
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Re: 4972s thermoquad
The big advantage to that carb is the lack of well seals ("X-rings"). That's the only annoying thing about the later versions. However, as Jim said, the 4972 and 4973's are hard to find parts for. Don't be surprised to pay big $ if you do find them. Ask me how I know.
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Jared Jordan 9 B/SA 2024 Jeg's D7 All Star - Stock |
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04-12-2016, 07:30 PM
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#7 |
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Senior Member
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Re: 4972s thermoquad
Does anyone have a strip kit for the 4972 carb. I'm looking for the jet sizes that the kits had in them. I have a 4972 that I tried a few times, but the jetting is calibrated completely different from the newer style TQ's.
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GEORGE MIRZA STK 1236 |
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04-12-2016, 10:58 PM
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#8 |
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VIP Member
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Re: 4972s thermoquad
Small primary rated At 800 cfm large primary 850 cfm
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04-13-2016, 11:06 AM
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#9 |
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Member
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Location: PORT ORANGE FL
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Re: 4972s thermoquad
George you have a PM
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Denny Steward GT/JA 246 |
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04-13-2016, 03:48 PM
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#10 |
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Re: 4972s thermoquad
I also would be interested in any 71 Parts/Kits/Carbs.
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John Irving 741 Stock 741 Super Stock |
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Linear Mode
