4 barrel thermo quad, is it worth 20 bucks?

[speedfreak]

i found a thermo quad in the junk yard today, on a 78 dodge van...is it worth 20 bucks....everything on the motor is there, air cleaner, gas peddle assembly etc......thanks....speed freak

[cuda66273]

IMO...No....but there's some people here that like them for some reason which I have not yet been able to determine?

Possibly a resto project?

Can you rebuild it, buy all the parts, spend the labor time and make it run as good as a Speed Demon for $399.00 out of the box???

[5thAve]

If it looks like it's a running carb the way it sits right now I'd say so. If it doesn't I guess it depends on how bad off it looks.

Id run a thermoquad over paying $399 for a carb anyday.... wait a minute, I do run one

[cuda66273]

...5th...your probably one of those guy's that spends $399 on an alarm system for a car that no self respecting thief would steal anyhow...hehehehee

Your stereo probably costs twice that and most of your motor is used up making enough power to run it.....

[lenweiler]

You guys eat way too much red meat!

[SUN RA KAT]

I like the Carter AVS 4 bbl better than the ThermoQuad, but for $20 and a few more $ for a rebuild kit, you've got yourself a good project and a nice carb and a lot of knowledge when you're done.

Get it.

[75dartsport]

rebiulding a thermoquad is a rewarding and worth while project and you know what they run pretty good too . save your money and learn somthing about your motor .

[speedfreak]

well i will probably pick it up ,the sales paper says 17.50,it don't look to bad, clean inside and out,the van was rearended,and will work fine on my pick up,the demond will work good on the dart when the time comes.thanks,,,speedfreak.

[Dr. Righteous]

If you are counting on rebuilding it, grab it!
When they are in good shape that are great performers.
The biggest downside to them is the strip kits are not avaliable anymore.
The middle plastic part is avaliable for for most models now too.

[Doug Wilson]

I'd buy it and have it built by Demon Sizzler.

Ya know what??? I have just figured out that there is a good place for every 4 barrel carb I've ever seen or worked on.... and that's a LOT of pot metal and plastic.

If you are running an automatic, be sure to get the linkage that attaches to the back of the head. If you don't want it, I'll buy it from you.

[Doug Wilson]

Anyone have any thoughts about running 2 T/Qs in-line on a dual quad manifold for a big block?

Like - will they fit, how to set-up the linkage (stick shift), would they work OK??

Just some thoughts my rotting brain considered for the 440 Ramcharger.

[5thAve]

I meant I do run a Thermoquad funny guy
If that were true I might be a bit upset about now
You must have a pretty big fart pipe on your car to come up with things like that

[George G. Leverette]

The T. Q. is a great carb, easy to rebuild and setup. What type of intake manifold, spreadbore hopefully so an adapter will not be requiredto mount the carb.

[cuda66273]

Doug if your thinking about the pressure valve linkage for a 727 on the Hellfish you won't need it. After we finish with the tranny all you'll need is a shifter cable.

We eliminate all that stuff and the govenor.

[dwc43]

Originally posted by Doug Wilson
Anyone have any thoughts about running 2 T/Qs in-line on a dual quad manifold for a big block?

Like - will they fit, how to set-up the linkage (stick shift), would they work OK??

Just some thoughts my rotting brain considered for the 440 Ramcharger.

I saw two of them inline on a blower before. That's kinda close aint it?

[pishta]

PAW sells a convertible top for a cross ram that shows 2 TQ's mounted. They are diagonally opposed, might be tight asshole to bellybutton unless it is on a OEM dual quad from the 50's. they were far apart. As for linkage, I would go 1:1 as the primaries are pretty small to begin with, both opening up would seem to be manageable.

[Doug Wilson]

Thank you, guys. Don - I'm thinking about the Ramcharger 440.

[rumblefish360]

The T-Q is a worthy carb to rebuild. It isn't a super HP maker due to the carb being a very old design. However, for a street strip (Mostly street) carb, it will do nicely.
The small primarys up front are about 200 cfm or so. Hit the hammer and go WOT for a full 800 or so CFM.
Small primarys to help sqeezzeee out mileage with a higher velocity to aid fuel mixture and BIG secondaries to gobble up the air for speed.
Stip kits can be had. Tuning the carb can be a hard chore if you have moved to far from stock. Rods and jets are not made new. They can be ordered from shops at crazy prices.
Some people have a hard time tuning them. I don't know why? There simple carbs.

Dr. Righteous, who is making the middle parts now? ANy info would be helpful. Thanks

[rumblefish360]

Oh, almost forgot, Yes! IMO, it's worth it.

I have seen an old picture of a racer, forgot whom, that ran 2 T-Q's atop a Tunnel ram in a A body Cuda.
They were in-line.

[cuda66273]

"I have seen an old picture" ....

I rest my case your honor and request a 2 day recess whilst I enter this info into my Tandy 64 computer.

Sorry just couldn't resist....got "Too Much"(don't forget that phrase) sleep last night.

[beepbeepsrule]

Just remember it is a Spread-bore and won't bolt up to just any 4 bbl intake manifold.....but I think $20 is about it unless you knew how it acted before it hit the junkyard. Get all the linkages as suggested also.

[Dr. Righteous]

I believe the company name is TOMCO. They are in the carb rebuild kit business. I ran across their website once. I will see if I can dig it up.

[Doug Wilson]

Cool.

[Dr. Righteous]

I can't seem to find the manufactures site on those Thermoquad center sections. Carbs Unlimited has them but they want $89 for it.

check here

www.thermoquad.com

Also check your back issues of MoPar Muscle. I first saw them in a "new products" article in MoPar Muscle some time back.

[69Dodgedart360]

a buddy of mine runs a 69 valiant with a 360 that run's high tens here in canada (2800 ft) with a thermoquad.
regularly driven to almost every street meet

[rumblefish360]

Dr. Righteous

Thank you.

[DEMON SIZZLER]

All 1975 to 1984 T.Q.'s will require specific mods to the top plate
and to the base plate and 22 degree taper idle mix screws before the carb will run well/tune on a non-smogger engine(no smog
equipment). The 1972-1974 carbs require no mods in stock form.

I build stock 800 & 850 cfm, street/strip 860/910 cfm and full race
1,000+ cfm T.Q.'s from 1972-1984 carbs. Once the specific model is built, it will require no other "special" tuning parts and will work on many other applications. This is due to the unique design of the metering systems and the "adjustable" 2ndary air door. I have tested my full race carbs even on a stock, single exhaust
low compression 440 and it did run better than the smogger stock
T.Q. so the versatility of these carbs is pretty incredible to say the least!

New parts are available for the T.Q. including new primary and 2ndary jets, new bowls, rebuild kits, small parts, brass floats, new
choke pull-offs. If you want an inexpensive to build, very easily tuneable carb that won't require additional tuning parts, the T.Q.
is a good choice, DAVID.

[Doug Wilson]

David - It's good to see that you are still around!

[rumblefish360]

I love this guy! Silent till it's needed. Ya never know when he's around.

Hey David. Do they make nitrofill (sp) floats.
And the question about rods and jets. No , scratch that, just rods. Anybody making rods for these carbs or am I going to have to invent something so I can use AFB rods.