Dual jet for mpg

[lukieg]

the 2gv got better mileage the the qjet?

[lukieg]

Is the dualjet 210 base plate different then the standard qjet? Does it match anything else, or is it a unique pattern?  Thanks again

[zieg85]

the 2gv got better mileage the the qjet?

Yes after I found the right combo.  Best I could do with the q-jet was 14.  Of course I was 21/22 back then and probably stuck my foot in it more than I should.  I should have unhooked the secondaries and tried that but once I put the 4 bbl-2bbl adapter plate on that engine I never went back.  Back then my commute was 100 miles round trip a day and the 2bbl did a great job.  I taught my wife how to drive in that truck.  I remember the PS box had a minor leak but enough to need to add fluid once a week, then the high pressure hose sprung a leak.  I didn't have 2 nickles to rub together but I had a parts truck around the back of the barn that had a good manual box.  I converted it to manual steering and had one less V-belt to worry about.  Those were the days...

[zieg85]

Is the dualjet 210 base plate different then the standard qjet? Does it match anything else, or is it a unique pattern?  Thanks again

Never messed with it but here is a picture of the bottom.  Looks to me you are gonna have to fabricate some kind of adapter plate.

[zieg85]

http://www.fireballroberts.com/Fish_Story.htm  is some interesting reading.  Every once in a while I will search eBay for them.  I worked with a guy who was a chemist and actually very intelligent.  He ran a nasty old mid 70's Buick with a 350 and one of these Fish carbs on it.  He was getting between 30-35 mpg with it.  Then he put a smaller one on a Pinto and was getting in the high 40's. 

[lukieg]

where can one get one of these super efficient carbs.. any still in production? I would be willing to try one.

[zieg85]

where can one get one of these super efficient carbs.. any still in production? I would be willing to try one.

I have no idea, I see them from time to time come up on eBay but never tried winning one.

[bobcooter]

The front 2 jets on a qjet should be no problem, I ran that way for years with the secondaries unhooked.

If you are going to school and on a budget, I think I might leave it as is and enjoy the driving like you said. It will not cause any realiability problems.

[lukieg]

I know a quadrajet is a better option.. but its soooo hard to stay out of the secondaries.

[lukieg]

How far does one have to depress the petal to make the secondaries on a qjet  open?

[bake74]

     Depending on adjustment, usually about half way down on the gas pedal.