Thread: quadra jet on a fe !!!

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Believe it or not a Q=Jet works great on a built 390 easy starts lots of power!!!

cool secandary kick in.
get the adapter from the store and a carb from a 403/350 olds/pontiac give or take just fulllsize motor about the same cubes as your fe.

It works !!!

acepatt

yeah, except you can get any q jet carb. there all 750cfm, just would need to be tuned in ( should be rebuilt if used anyway ) for the particular engine. Q jets are great carbs. but a lot of times chevy stuff works good on a ford, just look at the amount of chevy powered early fords

Originally Posted by DennyW

Now that's funny Matt.

yeah, I really can't say anything tho. I'm using the turbocharger from a '78 buick on my Ford engine, to make it go faster...

Ford also has there version of a Q-Jet, came on some of the 460's in the big cars. Good working carb when set up correctly....

One note to add........Most think it has nothing to do with nothing. The Q-jet had a CFM spec from 600 to 850. Never rely soley on numbers. It needs to be inspected by the good old eyeball and look down the throat. It helps start a search for CFM numbers and fuel metering to get a good project working. I realize this is vague, but the Carter and Rochester Q-jets are workable for the app.

Thanks Denny... Couldn't remember for the life of me what it was called.. Anyway, good carb to use. I believe they were also 750 CFM????

Originally Posted by nitrowarrior

One note to add........Most think it has nothing to do with nothing. The Q-jet had a CFM spec from 600 to 850. Never rely soley on numbers. It needs to be inspected by the good old eyeball and look down the throat. It helps start a search for CFM numbers and fuel metering to get a good project working. I realize this is vague, but the Carter and Rochester Q-jets are workable for the app.

actully, early carb'd turbo 231 buicks used a 550cfm qjet, there refrenced externally, for draw thru forced induction

Thanks Matt, You're right. There were 550 cfm offered for turbo apps because of the draw through the carb. See? you can teach an old dog new tricks.

Oops!, I forgot to assume the position......"Please sir, May I have another!" ........LOL

I have a q-jet on my Chrysler 440, (my first successfull carb rebuild) it runs like a champ. After reading this thread, I am gonna keep my eye out for a caddy carb. Sounds interesting.

Originally Posted by DennyW

The Qjet that came on the Caddy's were even better. They had a double velocity venturi instead of a single for even better fuel atomization, which in turn gave better gas mileage while cruising. The main reason for that was the weight of the vehicle. So, if you find one of them, get it, rebuild it right, and you have at least a 5 mile per gallon increase on a lighter car.

Denny,
Are you talking about caddys from the 70's-80's, or when? Is there any specific model to look for, or rather any specific model to stay away from?
Thanks, Dustin.

Originally Posted by 65ny

Denny,
Are you talking about caddys from the 70's-80's, or when? Is there any specific model to look for, or rather any specific model to stay away from?
Thanks, Dustin.

500 CI caddilac's from the 70's, maby 472's also

I love Quadra-Jets. I knew they came in 750 and 850 cfm. I did not know about the smaller ones.

Poor things have taken a bad rap over the years (Quadra-junk?) because they are complicated and not a lot of people can deal with them. Back when I was racing stock cars, we could use either a 500 cfm Holley 2-barrel or "a stock carburetor". Ha! That was a no-brainer - 500 cfm's or 850? All we had to do was find a guy that could make it work properly. Well, it took the young man 3 tries to get it right, but, Holy Mother, what throttle response!

I have a Q-jet on my coupe that came off of my old '78 ElCamino. It's almost 30 years old and has never been apart, never even had the top off! It is still reliable, has never had a leak anywhere, and delivered almost 20 mpg on my trip north last summer.

I had a 600 Holley on my old C-Cab; if it sat for a week I had to knock on the bowls to unstick the floats and then reset the float levels. It leaked constantly, even after two complete rebuilds (not by me - two different carb "experts").

Some Q-Jet info:

----> http://www.442.com/oldsfaq/ofcrb.htm

----> http://www.florida4x4.com/tech/quadrajet

----> http://www.florida4x4.com/tech/quadrajet/qjtshoot.pdf

Pat