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Re: Quadrojet on a Mopar?
[Re: SattyNoCar]
#792199
09/04/10 09:00 AM
09/04/10 09:00 AM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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yes..mid 80s truck,dippys,all 4-v 318-360 318 got 360 heads and the q-jet I look for mid 70s chebby q-jets and take the mopar throttle lever off the smog mopar q-jets tac weld it on the chebby carb for a older non emiss q-jet strip them down and tune them with good results they get good mpgs and have a nice kick to them when hitting the throttle the chebby carbs cost about 10$ for a kit to freshin up compaired to 20 30 $ for a smog mopar one the how to tune q-jets by carl monroe (sp?) is a good read and will show you how to strip and tune one for performance I got a lot of poeple asking..do you have a chebby engine in your truck??? cant miss the sound of a q-jet when it opens up the back barrels and chits and gets  
Last edited by scratchnfotraction; 09/04/10 09:03 AM.
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Re: Quadrojet on a Mopar?
[Re: scratchnfotraction]
#792200
09/04/10 10:26 AM
09/04/10 10:26 AM
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Joined: Jan 2003
Posts: 10,640
S.E.Ohio
Magnumguy
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 10,640
S.E.Ohio
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I had an 87 D150 w/360 and a q-jet. Man, it rocked, very much like a t-quad. Took it off and replaced it with a brand new edelcrock. I HATED that carb (the E-crock). Tony, I'll trade you that q-jet for a t-quad. I have a bunch of them laying around. 
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Re: Quadrojet on a Mopar?
[Re: scratchnfotraction]
#792205
09/04/10 01:16 PM
09/04/10 01:16 PM
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Joined: Jan 2003
Posts: 397
Ozona, Texas
Paladin
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 397
Ozona, Texas
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Scratch,
I think they are the best street carb out there when you figure cost, availabilty, spare parts, efficiency, and adaptability. I have run Q-Jets on many of my Mopars over the years.
Once you learn how to work on them, they are not as near as complicated as most people think. Thermoquads aren't bad, but I personally prefer the Quadrajet.
By the way, did you know they used them on Fords, also (429 SCJ)?
May God bless America,
Paladin
Last edited by Paladin; 09/04/10 01:17 PM.
1971 Dodge Charger R/T
1977 Chrysler Cordoba A35
1979 Dodge Lil� Red Express
1981 Chevrolet Corvette
1985 Chevrolet Corvette
1986 Chevrolet Corvette Roadster
1994 Lincoln Mark VIII
1998 Dodge Ram 2500 Sport V10
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Re: Quadrojet on a Mopar?
[Re: Cudajon]
#792207
09/04/10 01:40 PM
09/04/10 01:40 PM
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Joined: Jan 2003
Posts: 5,449
Woodbridge,CA
NAS Backyard
master
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master
Joined: Jan 2003
Posts: 5,449
Woodbridge,CA
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I just gave away my T-Quad to a buddy for a motorhome he needed to smog and sell. It worked OK but I never got the WOT throttle response I wanted. I just picked up a 67 Buick 430 Q-Jet from Pick-n-Pull for my 440. I'm going to play around with it and see if I can make it work.
1970 Challenger Ragtop 426 4 speed
1961 Olds 88 2 dr Sedan 394 4 speed GVOD
1968 Pontiac Firebird 428 4 speed
2000 Ford F-150
2002 HD Roadking
1961 Licence Plate collection
1995 Buick Roadmaster
www.nogreenautolaws.com
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Re: Quadrojet on a Mopar?
[Re: wedgeheaded]
#792211
09/04/10 03:50 PM
09/04/10 03:50 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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best way to mod a GM q-jet it to grind the end and remove the GM throttle lever and tac weld a stock mopar q-jet throttle lever on that way it works with the correct stock mopar linkage from mid 80s trucks and 4-v cars the ones I look for start with a 704XXXXXX carb numbers the 1704XXXXX ones are ok too but I like the older 327 Gm carbs for a swap to a 318,just about the same i think I got a 74 q-jet from a truck with a stock 360 intake on the shelf I swap back and forth with the eddie LD4B/600 carb just picked up a thermobog thats an early non emissions looking one not many vac hook ups to it I needs to resarch that one some  i say run what ya brung
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Re: Quadrojet on a Mopar?
[Re: GO_Fish]
#792213
09/04/10 05:32 PM
09/04/10 05:32 PM
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Joined: Jan 2003
Posts: 3,316
Great White North
Wheeler
Master
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Master
Joined: Jan 2003
Posts: 3,316
Great White North
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1984 was the last year for the Carter Thermoquad carb. In 1985, Chrysler switched to the Rochester Quadrajet for all 4bbl applications. The following vehicles were equipped with Rochester Q-Jet carbs: 1985-1988 Dodge Trucks and B-Vans with the 360 4bbl 1985-1989 Dodge Diplomat/Plymouth Gran Fury police cars with the 318 4bbl About 8 year ago, me and a mechanic friend did a 4bbl swap on my 1985 Dodge D150 truck. The truck had a 318 V8 with the factory 2bbl. We ripped out the 2bbl and installed a used Edelbrock Performer intake and a reman Edelbrock Performer 600 cfm carb. The Edelbrock ran OK but it had numerous issues and I wasn't happy with it. I had a Rochester Q-Jet carb that was originally on a Dodge Truck 360 V8. I had the carb rebuilt by a local rebuilder and put it on the truck. Gas mileage, power and overall driveability went up. The truck would start instantly - cold, warm, hot. The Q-Jet is a great carb - providing you have a good carb to begin with and it is rebuilt properly. If you a looking for a spreadbore carb, a rebuilt Q-Jet would be the way to go. IMO, the Q-Jet is a much more reliable carb than a Thermoquad. Unfortunately, Thermoquads don't age well and can be incredibly tempermental - especially the later ones equipped on Lean Burn/Electronic Spark Control engines.
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Re: Quadrojet on a Mopar?
[Re: Cudajon]
#792216
09/06/10 09:36 AM
09/06/10 09:36 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
I accused the county of doing it, till I found out it came from the dealer that way. They went to the q-jet because they couldn't tune the t-quad. Dumb. The q-jet ran ok but I liked the T-quad better.
no, they couldn't meet emissions with the t-quad....
Last edited by patrick; 09/06/10 09:39 AM.
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Quadrojet on a Mopar?
[Re: patrick]
#792217
09/06/10 11:15 AM
09/06/10 11:15 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:
IMO, the Q-Jet is a much more reliable carb than a Thermoquad. Unfortunately, Thermoquads don't age well and can be incredibly tempermental -
Sorry, that's nonsense, they "age" just as well as any other carb, nothing works right if it's been broken, poorly rebuilt or modified, or has been "tuned" by someone lacking the proper knowledge to do so properly. Once adjusted properly they require VERY little adjusting, no more than any other carb design, not tempermental at all.
Quote:
especially the later ones equipped on Lean Burn/Electronic Spark Control engines.
While certainly not the best as a performance carb in stock form, they worked fine in stock applications if all else (non carb related) was in order, however, most the time that wasn't the case.
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Re: Quadrojet on a Mopar?
[Re: ScottSmith_Harms]
#792218
09/20/10 12:51 AM
09/20/10 12:51 AM
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Joined: Dec 2003
Posts: 32
New Jersey
Greg_Gessler
member
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member
Joined: Dec 2003
Posts: 32
New Jersey
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While Quadrajet carburetors are mainly known for their use on GM products, they did use them on some Fords, Mopars and even many marine applications. 
QuadrajetParts.com
Carburetor Parts Superstore
Carter, Ford/Motorcraft & Rochester
www.QuadrajetParts.com
Rebuild kits and Hard to find parts.
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Re: Quadrojet on a Mopar?
[Re: scratchnfotraction]
#792220
09/20/10 03:02 AM
09/20/10 03:02 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
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:
best way to mod a GM q-jet it to grind .. it up for scrap-metal ...
THERE ...I "fixed" yurr post ferr you !!
And as far as you using the word thermobog ? EFFEN you use the proper tool to adjust the secondary air-valve .... this potential-issue would not be a problemO.   
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Re: Quadrojet on a Mopar?
[Re: patrick]
#792221
09/20/10 03:25 AM
09/20/10 03:25 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
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:
Quote:
I accused the county of doing it, till I found out it came from the dealer that way. They went to the q-jet because they couldn't tune the t-quad. Dumb. The q-jet ran ok but I liked the T-quad better.
no, they couldn't meet emissions with the t-quad....
This is not what I heard Patrick .....
Back in the 80's I had not even handled a TQ .... OK - I admit ...I was a Berry-Bumz back then ... BUT I saw the light and corrected my errors !! 
But I heard that the reason the OEM dropped the TQ is because Carter dropped the TQ ....because they saw the handwriting-on-the-wall ...that carbs were going to be DINOsaurs in no time.
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Re: Quadrojet on a Mopar?
[Re: dOc !]
#792222
09/20/10 03:41 AM
09/20/10 03:41 AM
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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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Quote:
But I heard that the reason the OEM dropped the TQ is because Carter dropped the TQ ....because they saw the handwriting-on-the-wall ...that carbs were going to be DINOsaurs in no time.
I don't buy that. If carter had chrysler, a large OEM customer they would not just say 'too bad' to chrysler, shut down the thermoquad factory and destroy all the tooling for it. The notion of the thermoquad factory burning down seems a lot more plausable to me.
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Re: Quadrojet on a Mopar?
[Re: DaytonaTurbo]
#792223
09/20/10 04:01 AM
09/20/10 04:01 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
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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Not asking you to "buy" anything .. that is just what I remember happening. There was never really any good "aftermarket" demand for the TQ(vs the Berry) ... and there WAS that "handwriting" ... and Chryler's OEM demand for the TQ ? .... vs say their demand for a the TBI's that they were putting on most of their vehicles at the time .... was an ant-hill vs Mt Everest. WHEN WAS the last carb installed on a Mopar ? ... and how about the other companies such as GM and Ford. I don't know ...I am asking. But it was not THAT far off from when Carter dropped the TQ.
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Re: Quadrojet on a Mopar?
[Re: 440newport]
#792225
09/20/10 10:39 AM
09/20/10 10:39 AM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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thermobog quadrojunk holley gasholes carterbroke eiddiebrakes I just one to work for me  spedbore or squarebore gotta give it up to my shade tree striped q-junk,it only leaks fuel every where,but kicks 19 mpgs and makes the 318 scream been running junk all my life,I am just tied or working on them can I just have one that works? 
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Re: Quadrajet on a Mopar?
[Re: Pat_Whalen]
#792227
09/20/10 03:18 PM
09/20/10 03:18 PM
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Joined: Dec 2003
Posts: 32
New Jersey
Greg_Gessler
member
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member
Joined: Dec 2003
Posts: 32
New Jersey
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Federal emissions requirements killed the carburetor, the OEM's saw that FI was the way to go to be able to better control the A/F mixture under various conditions.
QuadrajetParts.com
Carburetor Parts Superstore
Carter, Ford/Motorcraft & Rochester
www.QuadrajetParts.com
Rebuild kits and Hard to find parts.
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Re: Quadrojet on a Mopar?
[Re: dOc !]
#792228
09/20/10 03:45 PM
09/20/10 03:45 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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Quote:
Not asking you to "buy" anything .. that is just what I remember happening.
There was never really any good "aftermarket" demand for the TQ(vs the Berry) ... and there WAS that "handwriting" ... and Chryler's OEM demand for the TQ ? .... vs say their demand for a the TBI's that they were putting on most of their vehicles at the time .... was an ant-hill vs Mt Everest.
I'm not arguing the fact the handwriting was on the wall for the downfall of the carb. But carter had way over a decade of build time on the thermoquad, I don't think they would have just decided to throw out all the tooling, infrastructure and training they had invested into thermoquad production while OEM orders from chrysler were still comming in. If chrysler changed carb suppliers for whatever reason, maybe the TQ couldn't meet emissions standards??, that would make more sense. If the OEM orders ceased, and with little aftermarket demand for the TQ, stopping production and changing the factory to produce some thing else would have made perfect business sense. IIRC, mopar started putting quadrajets on the v8's several years before the tbi system appeared on a mopar v8.
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Re: Quadrojet on a Mopar?
[Re: DaytonaTurbo]
#792230
09/21/10 01:11 AM
09/21/10 01:11 AM
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Joined: Jul 2008
Posts: 30,424
Florida STAYcation
dOc !
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:
If chrysler changed carb suppliers for whatever reason, maybe the TQ couldn't meet emissions standards??, that would make more sense.
From what I remember hearing ... the TQ was a muchO BESTer emission piece than the QJ ...again it was all about that "handwriting". And I say that Carter saw-the-light sooner. SURE Chrysler would have kept ordering ... but at what kind of volumn ...vs what they were with the TBI systems?
For sure .. ANY carb can not hold a candle to a good TBI or DPFI system in most every way. Their decade-of-R&D on the TQ ...was good while it lasted.
And for me ... I did not appreciate the FINESE that the TQ had(over all the others) ...uNtil way later.
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-ton 4-door ex navy dodge had one on it and it was a dog.!