Thermo quad Id

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Mike 340

Mike 340

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Can anyone tell me what this thermo quad came off of and is it a "good one "?
Part #6322S. Carb is complete and throttle valves open freely.
 
Thats from a 73 440 LP. I had a few for sale and they went pretty quick so maybe that means theyre desirable??

Jake
 
Thanks Jake, I actually have 2 of them but the other one has one of the tubes in the back broken off. Just to be clear LP stands for low performance?
 
Mike 340 said:
Thanks Jake, I actually have 2 of them but the other one has one of the tubes in the back broken off. Just to be clear LP stands for low performance?
Click to expand...
As far as i understand thats what it means.

Jake
 
if you want to use that carb on a 318 -340 engine..
just think about ...that this carb has the bigger primarys..
for a 318-340 engine...the smaler primarys are better...
Greetings Juergen
 
If the 318 is stock to a very mild hop up, the primary side is a bit big but workable.
The carb is a desirable kind of unit since it is a '73. The tube in the carb can be replaced.
I wouldn't even worry an once about the "LP" issue since it feed a 440. Which has mucho more power then a decently warmed up 318.
 
Thanks rumblefish , I was thinking on putting it on my 340 pretty much stock except for a xe 268 comp cam. 727 with 2200 stall and 355 gears. Do you think that this would be a good choice?
 
Yes. The challenger will be to tune it.
You can bend an AFB rod 3/4 inch down and clip the rest to fit a TQ since a (jet & ) rod kit is hard to find.

The 340 did come with a big TQ after the first couple of years.
 
Thank you for your information, I have a few TQS in a box I may have some different rods and jets. I have one that has no part #but has a sticker on the float bowls that says "Thermoquad " with flames. It also has chrome linkages? Do you know anything about this?
 
Does it look like the one I have below?
What are the numbers on it and is the throttle linkage the same?
Notice the mixture screws up front are splayed and not in line parallel on a downwards angle.
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I looked on the base plate and there is no sign of any numbers. Is there anywhere else I should look? This one is a odd ball to the rest that I have.
 
So what is this, a aftermarket carter?
Also are they any good or so hard to find parts for they are obsolete?
With no part number I would think that would be tough to get a kit .
 
It's a race carb. IIRC, a '70 kit will work with it. It has press in jets while the rest have screw in jets. The carb also meters the air and fuel differently than the rest. It's an air bleed carb and the rest are solid fuel carbs.
 
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