I did some swapping with a buddy and ended up with an iron spread bore intake for a 360 that came with a carb. It's a quadrojet though. Did Mopar ever use a quadrojet and if so, when? Thanks, Tony

mid-late 80's pickups just before throttlebody injection.

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

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.

I was doing part time work at a garage helping out a friend when the Highway patrol brought there Fury by. The patrolman was complaing that another patrolman who had a pontiac could blow the fury off the road. Said he had his fury in the shop numerous times but they couldn't make it run. I took a look at it and the dip wads had lossened up the secondary spring on the air door so loose it would just flop open when the secondarys where opened. I adjusted the carb, timing etc and went for a ride. The car hit 130 easily and the patrolman was estatic. We got all the petrol cars after that. One day a new one came in and had a quadrajet. 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.

Even the full size Dodge vans had them. It was funny to the carb howl underneath that engine cover next to your legs.

I think it was 83-84 when mopar started running Q jets, from what I heard the plan that built T quads burned down taking the tooling with it.

One of my Dads friends bought a 85 D150 with a 318-4 833OD and he was surprised by the Q jet, after riding in it my Dad ordered a new D100 with a 318-4 but it was late in the year so it came in as an '86 with a 318-2, he refused the truck when it came in so they installed a performer intake with a 85 spec Q jet, air cleaner, throttle and KD linkage etc.

So, would the Q-jet from my Buick 350 bolt onto my 83 360 4bbl with no trouble?

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

I think you have to find the correct linkage, especially if your running an automatic.

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.

once tricked out they work great. look at NHRA F/SA 3800 lb Buick GSs, 455 with a Quadrajet, they run low 11s high tens with that carb!

http://www.youtube.com/watch?v=zuW8G8mzOrs

Nothing wrong with a Q-Jet, in fact I'd put them in the same realm of a Thermoquad concerning efficiency and power, as mentioned, a similar design in many ways to the TQ. I'd still give the TQ the nod in terms of my favorite of the two all things considered.

Wow, lots of good info. Thanks. I did some checking and based on the numbers, it from an 85-88 Chrysler product. (M4ME 17085408) I opened it up today and it looks OK to me so I'll most likely try a kit in it and see what happens. One of the techs here is big into QJs and I think he'll help me tune it. Carbs were always Voodoo to me but I guess ya gotta start someplace.

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

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.

I've always liked the idea behind a TQ but not the implementation of that idea. I had Demonsizzler rebuild a TQ for a 79 LRE and he jumped through hoops and rings to get it back to me for the NATS that year. (He treated me well, thanks DS.) It ran great right off the FedEx truck but still leaked a little. I think this QJ might be all right.

I have a 77 or 78 400 with one. I didn't know they used them on the big blocks.