what style carb is this?

[clairday modtop]

the QJ carb on my 400 is shot. i have this one on a 383 in my back yard. can anyone tell my what style it is so i can get a rebuild kit for it. it is complet just frozze and been siting for over 20 years. i know its a holley

 

[pauly v.100]

4150 double pumper if i'm not mistaken

 

[dustoff440]

double pumper(squirter), dual feed, mechanical secondaries, manual choke get the 4 digit number off the air horn and go to mortec.com/carb.htm for series and cfm rating

 

[clairday modtop]

was that a good style carb?

 

[clairday modtop]

i think i got it (6r 5534b) but the list i found all start with (r) and #44

 

[racerbob]

A mechanical secondary carb is best suited for racing or a light Street/strip car with a loose converter and steep gearing.

But if you can soak it long enough to free it up and clean it out, you should rebuild it and try it. You can get a kit from Summit for a reasonable price. If it doesn't work well you could still sell it as a rebuildable core and get back enough to cover what you spent trying to fix it.

You can also replace the throttle body, main body, metering plates, etc, with Billet Proform pieces and make your self a trick carb.

Or you could sell it on Ebay and use the proceeds to put towards a new carb.

Good luck,

Bob

I try to get a cleaner carb to start out with when I rebuild one for one of my projects, but I have not bought a new carb in over 30 years of doing this!

 

[SGBARRACUDA]

i think i got it (6r 5534b) but the list i found all start with (r) and #44

It should be:
4776 600 DP
4777 650 DP
4778 700 DP
4779 750 DP
4780 800 DP
4781 850 DP

 

[clairday modtop]

thanks guys, i'll soak it and see what i can do on the losning it up.

 

[2 Darts]

Although the 4160 is an excellent carb when working properly, it is not a direct replacement for the Thermoquad or Quadrajet. The QJ & TQ are considered spread bore carburetors, where as the others are considered square. Pull the 4160 and your QJ and look at the throttle plates. The difference is easy to see.

 

[clairday modtop]

found it. its 4777-2
1270

 

[SGBARRACUDA]

That is a 650 DP.

 

[mullinax95]

http://www.holley.com/0-4777C.asp

650 CFM

 

[fishy68]

I've rebuilt at least a couple hundred carbs and have to say I wouldn't even waste my time with it. It looks like oxidation has most likely gotten the best of it. When water gets in them it oxidizes (corrodes) and plugs the internal ports and nothing will soak it out. And as 72 Demon said it won't bolt right on. It'll need an adapter to bolt on.

BTW: You said in your original post your "QJ" carb is shot. QJ generally stands for Quadrajet. Why does your Mopar have a GM carb on it? Should have a Thermoquad.

 

[72_Durstya]

i was goin to say holley 650 or 750, looks a lot like one i ran on my duster i got off a friends camaro.

 

[victordemise]

I don't know jack about carbs, but that is one trippy lookin' son-*****!
(I thought that was some sort of tractor engine too!)
I'm amazed these guys can I.D. it at all.

...but yeah, it looks pretty corroded. Try soaking it in Coca-Cola, Then C.L.R., then molassess, then bury it in a New Orleans graveyard with the foot of a chicken (under a full moon) then more Coca-Cola, then get a priest to whiz on it, and maybe then...just maybe....

 

[JR]

If you drive the car I would find an Eddy 600 or Carter 650.

I have seen a few truck 360's with Quadrapukes on them. I even bought one once and gave the carb to a chevy buddy to use for a boat anchor. Coated styrofoam floats, what a wonderful idea.

 

[stroked 340]

If you drive the car I would find an Eddy 600 or Carter 650.

I have seen a few truck 360's with Quadrapukes on them. I even bought one once and gave the carb to a chevy buddy to use for a boat anchor. Coated styrofoam floats, what a wonderful idea.

Almost as bad as plastic main body ie: thermo-bog....

 

[SGBARRACUDA]

I've rebuilt at least a couple hundred carbs and have to say I wouldn't even waste my time with it. It looks like oxidation has most likely gotten the best of it. When water gets in them it oxidizes (corrodes) and plugs the internal ports and nothing will soak it out. And as 72 Demon said it won't bolt right on. It'll need an adapter to bolt on.

BTW: You said in your original post your "QJ" carb is shot. QJ generally stands for Quadrajet. Why does your Mopar have a GM carb on it? Should have a Thermoquad.

Dodge came with QJ carbs in 87 -88 360 truck application before they went to FI. I bought a brand new 87 250 2wd 360 service truck. came with a QJ carb.

 

[fishy68]

Dodge came with QJ carbs in 87 -88 360 truck application before they went to FI. I bought a brand new 87 250 2wd 360 service truck. came with a QJ carb.

That's true. They also used them on some 318's in trucks. But he said he has a 400 engine and I don't believe they ever used the QJ on a 400. Feel free to correct me if I'm wrong.

 

[SGBARRACUDA]

That's true. They also used them on some 318's in trucks. But he said he has a 400 engine and I don't believe they ever used the QJ on a 400. Feel free to correct me if I'm wrong.

That I do not know? I've been told that mopar was in a pinch because they hadn't perfect FI by a certain time and therefore had contracted with Rochester to build a carb for the interim. Not sure if that was in fact true or not.

 

[clairday modtop]

i took the 400 motor out of a 76 dodge van and thats the car that is on it. a (GM) QJ.

 

[clairday modtop]

i can take a pic of it if you guys would like. lol i felt confused when i seen the GM stamp on it

 

[fishy68]

No need to take pics. It's the same bolt pattern as the Thermoquad which is what was used on the 400's so somebody probably just put it on sometime in it's past. I've seen it done before also. I ran a Thermoquad on a 74 Monte Carlo I had when I was a kid so it can go either way.

 

[clairday modtop]

kool

 

[dustoff440]

I have seen one thing that will work on internal corrosion but it strips the finish off the carb, SNO BOWL toilet bowl cleaner will do an amazing job of cleaning up a crusty corroded carb but you can only leave it in to soak for about 10-15 minutes as it will actually dissolve the carb if you leave it in too long.